Kubota RTV x900 Freewheeling

[GhostTown]

Hi folks, hopefully someone has encountered this before. Kubota x900 side x side starts freewheeling when going down steep hills. If you stop for a second, the tranny will seem to 'catch up with itself' and work again for a minute, but then you lose holdback when you take off again. Any help appreciated.

 

[slckeys]

Is it a new machine, or has this just started? I ask because I put mine in 4wd going down step hills. Reason being the back would "slide" down hills on wet or loose dirt giving the effect of free wheeling. 4wd essentially solved the free wheeling effect for my situation.