When I take my foot off the forward pedal, tractor keeps driving for 3-10 seconds, temperature dependent, lower temps longer drive times. If I try to push on the reverse pedal while tractor is still driving forward... I can't push down on the pedal, or I can push down on the pedal but it seems to not have any effect until tractor stops driving forward. My dealers service manager says he has seen this before on a DK50. He was able to clean some control valve and fix the issue, apparently the entire HST unit needs to come out to get at this control valve. This time Kioti has agreed to just replace the entire HST unit.