Hey guys, I have been doing a lot of searching but I can't seem to find what I am looking for. My STHM 61" 3-wheel rider runs strong and the hydros work awesome until they are running for about 5 minutes. So they are strong and perfect, then heat up after 5 min, and are slow and weak. I can hear the pump still pumping, but the speed is dramatically decreased especially when going up hills. My question is...Do I have a hydro pump problem or wheel motor problem? How can I check to make sure? From what I have read it is better to just replace the entire motor, since rebuilding isn't more than just seals. Any input would be appreciated. Thank You.