Scania airport fire truck

[Wombii]

I'm a beginner at styrene stuff. I started this project a year and a half ago on scale4x4rc, but this place seems like a great place to get input from people interested in big rigs. I don't know what I'm doing, and really welcome constructive criticism, even for things that are too late to fix! Do not be afraid to point out errors.

Link to the original post at scale4x4rc with details of all my beginner mistakes.
Here's the full album: https://imgur.com/a/E9L4j. The following 2 posts are a quick summary.

Project:
Scania Rosenbauer airport fire truck, As delivered by Egenes AS to the Royal Norwegian Air Force in 2009. Very similar trucks have since been delivered to the Norwegian civilian airport operator Avinor. The RNoAF trucks are based on a Scania P470 in 4x4 and 6x6 versions with a combination of winch and water cannon or a F-16 rescue platform mounted on the front. The Avinor trucks are slightly newer, and seems to be based on a P550. The Avinor versions are equipped both as crew cab and single cab in 4x4 and 6x6. The most notable difference on the outside is that the Avinor versions have a smooth side panel on the water tank module and orange stripes instead of a red, white and blue stripe on the RNoAF version.

Specs of the Avinor 6x6 crew cab version:
SCANIA P550 CB6X6HHZ
Length: 1055 cm
Width: 255 cm
Weight: 16 metric tons, with max allowable weight 30 metric tons.
Tire dimensions: 395/85R20

Specifics of my inspiration, RNoAF 6x6 delivered to Rygge air force base in 2010:
http://www.egenes.as/news.asp?id=9714&c=167&t=425
SCANIA P470CB 6x6
10200 liter water tank
600 liter foam tank
RM60C mounted on the roof, 4000 liters per minute.
RM8E mounted on the front bumper, 1000 liters per minute.

Specs of my model:
To be determined
Roughly 73 cm long.
186mm wide at rear wheels.

References and links:
Google site search of Egenes.as, because they've only indexed newer trucks in their table of contents:
https://www.google.no/search?q=site:...w=1334&bih=790

Egenes AS website, a true treasure trove of info and pictures of fire trucks delivered by Egenes:
http://www.egenes.as/

Rosenbauer Buffalo Airport fire trucks, including data sheets for sample vehicles:
https://www.rosenbauer.com/en/svc/ro...hicles/buffalo

Brochure and specs for Rosenbauer RM60C water cannon (PDF):
https://www.veljeksetkulmala.fi/uplo...i.original.pdf

Norwegian vehicle database with basic specs for all registered vehicles:
https://www.vegvesen.no/Kjoretoy/Kjo...¸yopplysninger

Some nice builds with detailed photos. The Scania and Man TGX builds have been very helpful:
http://robse.dk/

Flickr albums with reference shots of the roof of a crew cab:
https://www.flickr.com/photos/111333...7681852507242/

https://www.flickr.com/photos/111emergency/29612523816/

Notes:
The CP31 crew cab is longer than the CP28, and has room for an extra window in the middle.
The rear door of the crew cabs is slightly higher than the front doors. (about 3mm on CP28 in 1/14 scale).
The Tamiya Scania body is not perfect, especially with the height of the door handles and door groove. If you base your cut on those reference points, you will run into trouble.
The part number for the main body is 9335474.
The color of European ambulances and yellow emergency vehicles is RAL 1016 Sulphur yellow. It's not available from Tamiya. It's weird and looks deep yellow, unsaturated yellow or almost lime green depending on the light.

The water tank level lights on the trucks delivered after 2009 are only lit when the pump is powered. They're lit when the ignition is on in the earlier Avinor trucks.
The round rear lights are rear lights and brake lights combined in the LED ring, and turn signal in the middle.
The work lights on the top of the rear module is also used as reverse lights.
In Norway parking lights and side markers are always on. Driving lights have to be on when moving during the day. Low beam has to be on at night and auxiliary high beams may only be on if the normal high beams are on. Driving lights may or may not be on when low beams are on.

The RNoAF trucks have the older non symmetric dashboard instrument panel. The newer Avinor trucks have the newer symmetric dash.
The RNoAF trucks have a reverse cam display mounted to the panel above the windscreen near the ceiling. The newer Avinor trucks have it integrated in the dashboard.


Useful English/American synonyms: Parking lights - sidelights. Rear lights - taillights. Turn signals - indicators. Brake lights - stop lights. Full beam - high beam - main beam. Dipped beam - low beam.

*Constructive criticism is very welcome*