I bought a 2017 S650 with 400hrs on it. Put 100 hours on it and lost all the hydraulic oil into the chain case. After some reading and being unable to see which side was leaking I replaced left and right carrier seals (2 seals each side instead of one). It sucked and I was all ready to hang the motors but I cannot seem to get them back on the carrier. The end of the two speed motor sits on the outer frame and the angle is enough that I cannot fully seat the spline. After 2 hours of adjusting. I still cannot get it on. What am I doing wrong.