g2r drive shafts

has anybodyt else had probs with the drive shafts on g2r,

I have assembled g2r roller, and the only part i had left was drive shafts, i installed and noticed that the rear short shaft is too long, i called gorillamaxx, and they said i got a bad rev, they sent me new shafts, however they are the same length, have i done something wrong in assembly ? please help me, as i'm ready to sell this pos if the shaft thing can't be fixed

thanks,
austin

p.s i have the single speed conv. mounted in the front postition, and the neu motor points the the rear(passenger side).