Won't lift up after sitting all summer in the up position. I let it down and took the boat out with no problems but when I returned it wouldn't lift back up. Suspect stretched cable so I'll get a new one but not sure how to re-install. Should motor be raised fully with cylinder extended or cylinder compressed and motor down when installing the pins? Also, can the trim cylinder be refilled if leaking and what is the set screw on the lower left for?