I just bought a 5103 and a new MX-6 cutter. I have 400 lbs of weight on the front. The MX-6 is a cuttin' dude. I am a little concerned about the weight when I have it lifted. It seems real heavy and the when I let it down it goes down really quick. The rear tires seem to have a bulge to them when the cutter is up and all the weight is on the tractor. Should the weight of the MX6 on a 5103 w/quick hitch be a concern??? Is there anything I can do to make the lift control a little smoother??