Oilman, I think you'll find a PSI of twice what you're using will work much better.
Just to clarify, re: Lloyd's letter, the signature arm that I have has a solid aluminum machined VTA bracket rather than the folded one pictured, the counterweight tube has an aluminum insert rather than plastic and it is flush rather than protruding, and there is no paint on any of the arm parts.
Just to clarify, re: Lloyd's letter, the signature arm that I have has a solid aluminum machined VTA bracket rather than the folded one pictured, the counterweight tube has an aluminum insert rather than plastic and it is flush rather than protruding, and there is no paint on any of the arm parts.