I've never had success painting rubber band tracks with acrylics. The paint just doesn't seem to want to stick to it and flakes off.

Guy showed me a trick- pick up a can of bumper spray paint from the auto parts store. It's made for rubber and rubber-like plastic and can be applied as a primer under any other coats you want to spray.

Thanks for the replies guys, I was toying with the idea of base painting the tracks of the kit and then fitting them but I really don't think that going to be an option.  

Looks like I'll have to fix them in place and then prime and keep my fingers crossed.

Cheers