I just bought a 1989 23 Stieger Craft with a 350 replacement motor and a volvo Penta 280 or 290 drive. The old owner just told me the trilt/trim pump didn't work. I jumped out the pump and it ran but it didn't lift the drive. I took the pump off and found it had a lot of water in it. I was thinking rebuild the cylinders and replace the pump. After some searching it seems this drive has cylinders that nobody offers kits for and the replacement cylinders are coming in at around a grand. I was thinking maybe I flush out the cylinders and replace the pump with a used one I have and see what happens. The boat was docked in the water all the time and I'm going to trailer it. The only way I can see water getting into the system is through the cylinders or if water runs into the pump fill or vent. Anybody run into this?