I'm in the process of building a Scania R620, While installing the MFU, I noticed in the instructions (yes, I do read instructions sometimes

),
that I can only use the stock 540 motor, I have a Carson motor on the way, apparently these motors are "slower" than the 540,
http://cgi.ebay.com.au/ws/eBayISAPI....=STRK:MEWNX:IT
My question: Do I have to use the 540, or will the Carson be ok to use??
Cheers Paul