I have (2) 2008 Diesel Mule’s 3010 Trans. They have been completely bulletproof since I bought them. I just started having a problem with one of them. It has almost no power in high gear. It won’t even think about climbing any type of incline and is very sluggish to even start moving from neutral. (This thing has always climbed really well even in high gear). When I put in in low gear if climbs fine. Any thoughts before I start digging into the machine?

Thanks for any ideas.

William in Fort Worth