[tobnpr]

First, suggest you send the scope back to Vortex- their turnaround is very quick- days, not weeks- and they'll check the tracking, and repair or replace the scope if out of spec. While you certainly wouldn't expect the tracking of a Viper, being "off" by minute of angle and more would not be acceptable to them, either, I'd bet...

The Karsten idea is an easy and good one, but for guys that don't want to drill the stock, just adding an inexpensive stock pack with added padding underneath if needed gets the job done. It doesn't provide the quick and repeatable adjustment you mention, though.