I'm in the middle of replacing the tranny on my wife's 2000 Forester. Why? More than a year ago, it started slipping out of 5th whenever she'd let up on the gas, and it became reluctant to shift into reverse. More recently, it started making dreadful grinding sounds, and is reluctant to move at all: I'm lucky I was able to drive it into the garage! From what I've gathered, the "input shaft nut" in the transmission got loose, the consequence of which are these problems. Since I'd hate to have done all this work, and spent all this money, only to have the same thing happen again, I'd like to make sure the input shaft nut in the replacement tranny is tight, and will stay tight. I'd appreciate any advice on the matter. In the mean time, I'll experiment on the this transmission.