The control valve has broken twice. The first time the detent broke. Had it repaired at the dealer. Now, a year later the up and down is sticky and the control valve makes a bit of noise in the up mode and keeps going up even when I release the lever. Have to move the lever to stop the up motion. This makes it very difficult to operate safely. The dealer says there may be moisture in the control valve. If the detent needs to be replaced again (for about another $200) I can't help wonder what is causing the problem to begin with. Any ideas will be appreciated.
Also had to replace front bearing and seals on both wheels with not that many hours on tractor.