I did something similar to my old lesco 30, I attached a 40lb dumbbell with U-bolts where you bolt on the front caster arm, boy did that make a difference! I could take my hands off and it would still go in a straight line and pull 3 inch plugs.22 years old, and still under operation...Now, HOW MANY times has thing paid for itself over and over???? That dog gone machine is so cool...they just "walk". Hey, just a little tip...and this REALLY helps for ease of operation. What I did with mine, is take two old barbell weights and tied them together with a piece of rope. I would hang this over the T bar of the front casters. Yours is a bit different than mine, because yours has a plate on the top (mine is just the T where the sq. tubing is welded. I think it would still work for you, though. This countered it, so you didn't have to lift as much on the handles, and you get MUCH better penetration because of the way the machine is rocked (forward). Try it, and I guarantee you will prefer it. I hope this helps!