I will be installing a laminate countertop on some base cabinets that I've installed. I leveled the cabinets the best I could with a 4-foot level, but the problem is they are cheap, big-box, stock cabinets, and the tops of the frames and cabinet walls are not all even and flush. Obviously I want the final countertop surface to be level. What is the proper way to account for the uneven tops of the base cabinets beneath the countertop? I was thinking of using L-brackets, starting from the highest point I can find and installing them at the same level on each cabinet.
Thanks for your thoughts.