I've been having problems with the wired with hooks wax foundation I purchased from Mann Lake fitting the frames I purchased from Mann Lake. The foundation is too tall. The bottom bars I'm using are grooved. You would think that a company would make sure their products fit together. When I called about it, the rep told me they have this problem every year or 2. They then readjust the foundation mill and things are okay for awhile. No apolgies, no sorry for your troubles. I'm having to cut wires and trim wax on every sheet of foundation. I like the free shipping from Mann Lake, but with this lack of quality control, I think they've seen their last purchase from me. Hand trimming 300 sheets of foundation is a pain in the butt! FYI, the foundation was purchased at different times, so the problem has been going on for awhile. Anyone else having any issues like this?