the power tilt on my 85hp force when raised will not stay raised. It will lower all the way back down in approx. 5 minutes. All hydraulic lines are tight & not leaking. Pump reservoir is full of oil also. Could the pump be bad or could it be airlocked. Ifsomeone could help me it would be appreciated very,very much.<br /> <br /> thanking you in advance<br /> wally<br /> rambo44@prodigy.net