THis might not be related. I have a 550 UTV and I use primarily the low forward gear. This means the shifter must be pushed fully upward. I noticed that there is a very slight "click" and a final movement if I hold the shifter all the way up as I begin to move the UTV. As if it is not quite fully engaged without that last extra push as I give it a little gas. I also found that some UTV dealer (Hisun/Coleman dealer) had a video pointing out this very same thing. Like I said, may not be the problem you have. Good luck.