I have a 97 Johnson 150 ocean runner. Tilting down fine. Tilting up is intermittent and getting worse. I can hear the relay/solenoid click when pushing switch to tilt up from all three switches on boat but tilt motor inoperative. I can switch back and forth from up and down and finally will tilt up but sure this will play out soon. please advise on how to troubleshoot. thanks cajun