Our 2320 hydro pedal sticks in high range only if pushed all the way down going down a road for 10 min. Does not stick is not pushed all the way. In low range NEVER sticks pushed all the way. Is the Hydro buliding pressure or something? Again in low range never a problem, high range only a problem if push ALL the way for long period of time. NEVER a problem in low range. All linkage checked and lubed. Thanks for any help.