Bo,
I have also just installed the V plug as you did and loaded up my new MD20 drum (I had no problem with it fitting in my Saiga 12) and cut loose on a "pine cone" without any malfunctions yet. I was shooting low base Federals with the setting on the plug at five. I will be running some more thru at a later date and wish I could use the drum when Dove season opens and maybe could knock one down if the Feds change the rules. Oh, I added a Limbsaver slip on to butt stock and what a difference. Mike Davidson, if you read this post, thanks for the great products. Reb