I have a new Kubota L3901, 50 hours so far, and I had the dealer put top and tilt on the rear. Sometimes when I press the hydraulic control lever for either cylinder it goes in the opposite direction than it should. The dealers mechanic said this is normal because valves leak inside if theyæ±*e not å��ully engaged? Sometimes if I stop and restart the cylinder it will go the correct direction, other times the cylinder has to fully extend before it goes the correct direction. Along with being annoying, it could easily become a safety issue. Any ideas of whatç—´ going on?