1998 60hp Mariner. I'm having problems going from natural to reverse. I have the lower unit apart and the clutch and gears looks close to new. I try to push the pin in by hand to move the clutch and can't do it. The only way to push it in to engage it to the gear is to put it against a piece of wood and lean on it. Does this sound normal or does it sound like the spring is way to tight. I stripped out my shifter trying to get in reverse. It's always been a little hard to get in R but now it's taking a lot of pressure to get into R. Also with the propeller shaft out should the shift shaft spin freely by hand. I can spin by hand but it takes some force.