Their quality control on frames really sucks this year. I bought 800-1000 frames this year and have found bottom bars with two different depths. I use all wedge top bars for crimp wired wax foundation with hooks. Anyway, I discovered the problem after getting 200 frames with the shallow groove assembled and cross wired ready for foundation when needed. The shallow groove doesn't allow enough room for the foundation and so it bows and is all wavy in the frame even after embedding. Now I've spent who knows how many hours wiring frames that will have to be cut out so I can trim down plasticell on the table saw so it will fit and the frames won't be a total loss. I bought 50 lbs of wax foundation and now will have to buy at least 200 plasticell AND I've wasted a ton of my time wiring junk frames. The frames with the deeper groove are fine but the frame with the shallow bottom bar groove even plasticell warps a little if you don't rip it down about 1/16". I sent them an email with the same pictures, hopefully they make good for themselves. I just had to vent a little after getting 100 replacement bottom bars for the 100 frames I haven't assembled yet and even the replacements had the shallow groove. I'm dead in the water, it's mid-april and I have a bunch to frames to rework.