I have a Grasshopper midmount with a hydro motor that temporarily binds up. Say I'm backing up. I then stop and attempt to move forward. The right side motor works fine but the left lever will not budge. I cannot move the left lever forward. It will move after it sits for about 5-8 seconds. I can then gradually push the lever forward incrementally. After that, it works just fine. And it only does this about a third of the time. I've checked for debris around the linkage but have found nothing. Filter and fluid have been changed about 3 months ago. I'd take it to my dealer but it's out of warranty. Anyone have any ideas?