Heads milled wrong, you can't solve the problem. The main problem is that the head is milled incorrectly and undercut or overcut. So if you try to piece them together, they leave a 1/16 inch gap. I think that's fine if you're painting and don't mind filling the gap and sanding, but terrible if you want to paint wood. You get what you pay for. And I've learned my lesson. Pure garbage.