I'm the frustrated boater with the Johnson 7.5hp that will only start OUT of the water! Anyway, I took the lower unit out and completely removed all the gears, water pump etc. Everything checked out fine, but now when I replace the lower unit, the shift lever gets locked. I can back it out about a half inch and the lever shifts fine. I rotate the flywheel (clockwise) like the manual says, but no luck. I know the gears and the shifter cam is in place correctly because I've gone thru it about 10 times. (plus, when I back the lower unit off the half inch, everything shifts fine) Any suggestions?