I have been lurking here for a few days getting some ideas and help, but still not been able to find my issue. I have a 2007 650 H1 and there is a screaming or screeching sound coming from the transmission area. I pulled the one way sprag clutch out and it did not make much of a difference. I found what felt like some end play in the output shaft but did not break the entire motor open? What are the chances the noise is coming from the secondary shaft bearing vs the output shaft? I hope this is it as it looks easy to get to and I wish I had pulled it apart when i had the cover off before but I did not. The noise is worse in reverse under load but is noticeable in forward gear as well, when in nuetral or just not moving it's silent and sounds normal.