Len,
Micro adjustable in what respect? .......turnbuckle length, centershot? I guess I'm not picturing how this rest can be micro-adjustable. Turnbuckle length and swingarm position determines launcher height.
Ok spill it what the heck are you talking about.

I have never really found it difficult to set-up for tune anyway. So after installing 8 million of them do you think a micro adjust feature is necessary?