I have a 1985 evinrude 50hp with tilt and trim. When under power tilt and trim will not go up far enough, it stops about halfway. I disconnected the passenger side cylinder rod at full tilt. I can push the piston rod down about half way very easily before it stops. I have filled the resevoir with fluid while in the full tilt position. Is this cylinder bad or is this normal. I would like to hear from anyone with info on this problem.