As soon as I started a couple years ago, i read zsolt uses diamond polish- so I bought a set. The first needle I polished awhile back worked good but started spraying on its own- what causes this? I did a new needle the other day and worked it less. It will blow me a line at lower psi but to me even micron has limit on atomization. Any way wont pay $100 for needle but got enough diamond polish for every needle on the forum. I have used other polish but nothing creates mirror finish the way diamond polish does!!! I see why that was zsolt's choice.