Bravo 1 outdrive. Trim switch on the throttle lever. Trim in/down works fine. Trim up/out does not work. Not on this unit but I have changed the trim sending units located on the outdrive. I am not looking forward to that possibility on this drive. Can anyone give me sugestion on what to check, what process to take in a step by step manner such that I might diagnose where the problem is and hopefully avoid the replacing of the sending units.. Thank you very much.. I appreciate any help..