[lincpimp]

Just a possibility, the 52 tooth 32pitch gear may not be large enough to mesh correctly with the 15 tooth pinion. The motor will most likely touch the side of the tranny before the gears engage each other. I had issues with this when I put my align motor on my emaxx, smallest combo I could use was a 20/66, the align motor is about 42mm across, not sure how big a neu is.