Reverse problems

[rockwatersrx]

Just recent is my sled starting to have problems with reverse staying engaged. Never have I had issues in the past. Does this sound like a simple adjustment or possibly something more complicated.
Any ideas before I start adjusting.
Thanks

 

[super1c]

Simple adjustment problem. Not sure if you have seen this yet but a how to: http://www.totallyamaha.com/snowmobiles/aaTECH/techpdf/reversegrind.pdf