So i have a 1990 350L with 4x4. I went to replace the recoil spring and when i took off the chain cover on the right side i noticed the chain had gouged the side of the recoil cover. No idea why. The chain is tight, but not too tight so it definitly isnt that. Its almost as if the rear sprocket itself moved in too far and the sprockets are out of alignment. I havent seen anything like this before, and i do not know where to start. Has anyone had this problem before? Is there a way to adjust the sprocket from side to side?