does anyone have experience with the jd 6600 sh ? my problem is the right hand drive shaft from the trans. output shaft to final drive keeps wearing out the splines about every 400 hours . only the right hand shaft does it and there isn't any apparent adjustment to make . seems like some have this problem and some don't . thought about putting a universal joint in to take the wobble out but there just isn't enough room for a joint that could take that kind of torque load.