Bmr4life:
This is the radio box and yes i did just drill a hole and CA glue it in. Nps with it coming out so far.
Bazzokajoe: I only discovered torque sensing style diffs a little over a week ago. Look interesting but expensive. I'd rather try an 'inline' slipperclutch.
500K fluid could be nice in that it might absorb some drivetrain shock like landing rear wheels under power whereas a solid lock would make that rather harsh.