Thanks guys, i love getting feedback on my builds!
Some fool went and put a battery compartment where i need it solid, and made it solid where i need a hole for the gearbox... Don't they know some crazy guy is evenually gonna come along and do this?
Let's start with cutting a gearbox hole and then the battery holder off with sewing thread, nothing fancy it's kinda like using a two-man saw. Then i reinstalled the battery cover for the last time, and set my soldering iron around 450f. With the iron tip, I folded the battery door rim onto the door, and into it a little, then smoothed out the inside surface. Since i didn't go too deep, the outside looks original. Solvent welding would work and only be slightly weaker, but this had bigger gaps than i'd trust and nobody talks about melting plastic often here.
...and the best game you can name, is the good old hockey game...