Is it necessary to remove the lower unit to replace the clutch dog? I was hoping that since it's before the forward gear I could access everything through the prop outdrive. I'm suspecting the clutch dog is worn because it's requiring more travel to engage forward or reverse. Right now it appears I can adjust my cabling to have only foward or reverse. It looks to be a difficult task, but I'm hoping to make it easier if I don't have to remove the lower unit.