So not to long ago I drop the L/U to put a new impeller on my 6hp Yami. After putting the L/U back on it was a little harder to shift into reverse than usual. After a few months(sitting in the garage) it doesn't want to shift into reverse at all. Today I laid the motor down to take a look at it, and it shifted into reverse with no problem! Put it back on the boat, wouldn't shift into reserve . Took it off again, laid it down and it wont go into reverse. Nothing seems to be wrong with the linkage. Anybody got any ideas what could be going on? Or trouble shooting ideas?