So,I just finished my beast of a tractor, and have the wheels on a lever system. Going downhill is a breeze, but trying to PULL it anywhere is a nightmare. I asically have to muscle it around, the wheels are spreading, the block I used to set the wheels off the frame a bit keeps splitting, and one tire keeps popping it's tread right off the steel base! My husband has no faith I will EVER be able to move it with ease.......so now not only do I have to improve this situation, but I have to prove my husband wrong! Lol! I built it completely on my own, well with the help of little hands, and very limited carpentry experience. I'm proud of it...this is the only HUGE hang-up. Sooooo, suggestions? We have hills everywhere....dangit, but I wonder if 4 wheels on a lever system would help. Also, I'm reading here to use pneumatic tires...I'll have to try that next. I remember eyeing those at Lowes, but opted for the rubber ones to save $.