"Hi all. I'm new to this forum but i have read many of the posts. I have a houseboat with twin volvo 151b's and 290 stern drives. My starboard drive kicks up when put into reverse. The problem is not with the locking mechanism but with the hydraulic cylinders. One of them leaks and will not hold pressure so when put into reverse the drive locks onto the cylinder assembly, but the complete assembly raises. Is there anyway to fix the cylinder assembly so it will not be able to raise. I do not need to tilt or trim the drive. My thoughts was to drill a hole through the rib on the transom shield and the arm that holds the drive and then bolt them together on both side of the unit. Is this a viable fix or a bad idea ??? Any and all advice will be appreciated. Thanks."