Thanks. Mine might be overtightened as I can't loosen it at all. I asked because my tilt and trim is acting up on me. When fully raising the motor it operates fairly easy towards the top 2/3 rds of travel. But when lowering it, the last 15 or 20 degrees is very tight. Should I loosen the bypass valve a little? Might that help?
It sounds as if your trim reservoir could be low on fluid, the bypass screw could be siezed, or some other malfunction of the trim tilt assembly - more than likely mechanical or hydraulic failure. Get it fixed or you could get stranded on the water - not good!