I have (2) questions for you about the new wheel.
1.) Lower dies: Are they full radius or do they have a flat in the center?
2.) Did you notice the head swaying back and forth when you had higher wheel pressure. Did it spring much? I tried Gene Winfields, a few years back, and found that his mamoth wheel homebuilt wheel was splined the wrong way, and allows the adjuster to sway back and forth. It really made it much more difficult and time consuming to use when the wheels were out of alignment. Especially prevelant when using the lower dies with the flats. (more effiecient style die)
Glad to see you like your new wheel!