I,m having issues disengaging my univalve when the pole is extended, its fine when not extended and i,ve had it out and it seems to be working fine, could it be the hose thats stretched ?, it has been indoors for a few days due to the weather so it is very soft..
When I was using univalves, I found them to get unstable if either the flow and or the pressure was turned up too high. Flow too high and I had trouble turning them off at height. Cut-off pressure (CAL) on digi controllers too high and they wouldn't turn back on again. Seldom had a problem at ground level though.