Originally Posted by nathan g
I am trying to figure the proper thickness of head shims on my 321p. I run 30%, usually a 7tf, and I am located pretty close to sea level(Texas) usually with moderate to high humidity. The motor has the head button that has 3 dots arranged in a triangle. Any help would be greatly appreciated. Nate
Try a total of .70 mm to .80mm total shims under the head. This should be a good starting point.