my t-maxx 2.5 will not shift into 2nd, even when i let it rev to its limit, it doesnt shift. i have adjusted the screw for the shift point, and it does nothing! the thing was, i was driving it a few days ago, and the shifter worked! am i going to have to take the transmission out, and fiddle around with the gears? i have not overtightened or overloosened the screw.

thanks!