I am going in two weeks to the third pull with this tractor and wondering if I am missing some thing ( pull farm stock). I carry 300 lbs. of weight up under tractor and 400 lbs. on mid frame, one set of rear wheel weights and one set of weights on front end and no fluid in rears at 10lbs. tire pressure. Drawbar is set at 28" from center of rear axle(per rules) but measures 16" off ground and it could be 18" but at 18" draw bar is not level and rules say level drawbar. Tractor has plenty of power. I pull in 4,000-4,500lb class, 4,500-5,000lb.class and 5,000- 5,500lb. class. Any suggestions appreciated thank you.