Hello, Everyone. I have a great dane super surfer series II with about 850 Hours. Probably for the last hundred hours or so I have been dealing with a funny right side hydro. At the start it pulsates, vibrates, kinda makes a grinding sound and is jumpy. I also have to give it more forward pressure to keep up with the left side at the start. It just seems to not have the power it used to have. Also the reverse is also weak on the right side as well. I checked all the adjustments and they are fine. Also the fluid looks clean but has never been changed. I always just top it off when it needed it a couple times. After a going a couple feet forward it catches up then has as much power as the left side. I have been going crazy trying to figure this out. I put a new belt on also thinking that maybe the belt was bad. Also I tighted up the tensioner but it didnt seem to help. The pulsating and vibrations are especially noticeable when going up a hill or cutting across a hill with the bad hydro side on the bottom. If you guys have any ideas please let me know.