I have a 2015 that just rolled to 200 hrs today. I was running it pretty hard moving manure up and down some really steep hills. It ran fine until the end of the day. It has the HST transmission. I tried shifting from low range to high and I could not make the shift. The high range gears were already spinning and wouldn't let the shifter engage. Thinking that the pedal may have been the culprit, I moved it up and down but it didn't change. I depressed the clutch but it didn't help either. When I let the clutch out, the mid-PTO was engaged but the lever was still in the neutral position. It will shift in and out of low range normally and moves fine in low. Any ideas?..