I bought a package of plastic shims at Menards, super glued two together, and placed them under each of the wheels. Seemed to do the trick. So far so good on the Blackstone. I cooked some pancakes on Sunday morning but the griddle was too hot and I burnt the first batch. Turned the temp down and everything was fine...except it cooled down too much and the last batch of pancakes was not very golden brown. There is a bit of a learning curve but so far I'm enjoying it.