we have a brand new m7040, and it wouldn't lift a pallet with 2500lbs on it. them we took 350lbs off of the pallet, and it lifted no problem. i have heard of small modifications that can be done to increase lifting power. would anyone mind explaining them to me, and would it void the warranty at all. 2500lbs would be the max we would need to lift. it is 50 bags of 50lb per bag ice melt. thanks for any info.