i just got this st pro .. cheap and its in good condition starts first pull but there is somethingwrong with the tranny wheels turn if i hold it up but it wont move on the ground now it has the "problematic" 2 speed tranny but this is my first nitro car ... and iv never had a tranny apart before so what exactly is wrong in the tranny ? clutch? gears?

I don't think people are going to be able to tell you what's wrong without seeing the problem. You'll need to dismantle it and do some tinkering, it's how you learn nitro stuff.

i just did its a easy fix ... it lost a set screw that holds the gears on the trany i gues.... so the gears turn but they dont turn the shaft to turn the tires so yea anyone know if im screwed for getting parts for this thing since it is discontinued and such ?

Ebay?