I just finished replacing the lower shift cable on my Alpha one gen 1. On the initial shift test on land with the engine not running It will shift into forward, neutral but not reverse...with the the engine running, same thing. When I put it in the water and all three will work, although it needs an adjustment (to disengage forward I had to pull it back past neutral and reverse was clunking into gear). When I got it back out of the water I pulled the lower shift cable loose and manually shifted it to reverse with the engine not running...reverse will not engage on dry land. I am wondering if I may have an issue in the lower unit, it did have some water that was in it all winter. Any help will be greatly appreciated.