I recently purcased a t-maxx 3.3 rtr model #4908. I'm new to the sport and was wondering if anybody knew if there was a steel center driveshaft availible.Tried lossening the slipper clutch but still keep twisting off the original stock ones. The only ones I can find are for the old model with the opti-drive tranny, none for the new one with the long wheelbase.