I have had a hm1a carba-tec lathe for many years. Of course it's discontinued but I may need to replace the headstock bearings. I have a copy of the owners manual that shows the parts, but not the size of the bearings. The bearings are probably a standard size, but it would be nice to know what size they are before I take the thing apart and run all over town looking for bearings. Can anyone help me out?