Has anyone had success welding patch panels into their bed panels? I’ve tried 3 times now but keep having to cut it back out because it warps the whole panel so bad. It’s now about a 14” x 14” patch (keeps getting bigger every time I have to cut it back out. It’s right in the middle of the panel. I’ve tried all the tips and tricks. Is that panel just to big and flat to be welded without warpage or is it actually possible?