Hi Everyone,<br /><br /> I have a problem with my 1975 Evinrude power Tilt/Trim that goes with my 70573 70HP motor. When I raise the motor "up", it will go back down on its own. I am hoping it just needs the manual release valve cleaned and a new gasket. However, I understand the problem may also be a bad gasket in one or both cylinders in the tilt. The service manual and parts catalog I have for this motor does not have anything in regards to repairing or parts numbers for this tilt/trim. Does anyone out there have a schematic and/or parts diagram they could scan and send to me? I'd hate to attempt this blindly. Thanks for your help.<br /><br />John