I have a JD1025R with mid mounted mower and front end loader. Ever since it was new I always felt the motor was vibrating too much at low revs. OK above 1500rpm. Lately I have noticed a rattle from under the tractor. On inspection it appears to be coming from where the drive shaft fits onto the spline on the transmission. It only fits over the spline with no securing bolts. Securing bolts were used on my previous JD X595 tractor. I am concerned this will wear the spline on the transmission. The tractor has done 200 hours. Has anyone had experience with this problem and if so a cure. Thanks.:frown: