Can anyone recommend a good metal shop or anyone with a metal lathe that can machine the ends of 2 leadscrews for me? I just need one end done on both leadscrews. They were already lathed down to 8mm (from 16mm) , but the lathe they were done on was not calibrated, so they wobble. The leadscrews are straight, they roll smooth and flat on my granite countertop. They were definitely machined eccentrically. Just need them fixed.