ORIGINAL: truax
Most screws on the rc10gt are 1.5mm or 2mm. These wrenches strip out a lot, so you may want to keep some of them around. About you tire spinning problem...If yor diff nut is not tight or if it is broken it could cause that problem. It is only a 5 dollar fix, but it is a lot fo work. i would talk to the guy you got it frmo and find out what he has done to it.
Yeah I got the diff/tranny problem fixed already (posted above yours) - it was the slipper/spur and gear mesh!!
I'll probably just buy the same Dynamite set of sockets and hex wrenches that my friend has, sometime when I'm feeling rich