I just got my 2020 Stampede today, and on several occasions, I had difficulty shifting from reverse into Low or High and from Low or High into reverse. When doing so, it's like there's some sort of grinding. I'm not accelerating at all when doing this. I shut off the ATV, and then it shifts and engages just fine. When idling, it's anywhere from 1200-1300 RPM, so I don't know if that's the issue? Any thoughts? It's a brand new ATV, and still plenty of warranty, so I'm not overly concerned.