Yeh...I use teflon tape on the Zass to keep the adjuster knob from moving. That does the trick for me.
A good way I have found of judging how evenly your mill works is to use an Aeropress for brewing and then examine the puck afterwards. Here are two photos showing the difference. Both photos are of the exact same coffee (Aged Sumatran Lintong Peaberry '07 Crop roasted to full city +). The first one is done on the Zass mill I showed you above. As you can see, the puck is very well defined, integrated, and the grains compacted evenly. This is the mill I use for espresso:

This second image is the puck ground on an Enterprise #2...one of the mills I use for regular coffee. It's the one for my avatar. As you can see, the grind is very uneven with a definite dividing line between the coarser grounds and the finer:

Interestingly enough, there was really no discernable difference between the two coffees as far as how they tasted. I don't know if that says something about the state of my taste buds or if the Aeropress is just really forgiving or what...but...there ya have it.
BTW...I have ordered a Skerton mill for my own collection...
