West you are totally correct. I use Warne bases, Burris Tactical bases, Murphy Precision (one piece) and I have/had 10 different accutriggers and never ran into this. Are you buying the bases from a shop or online. I never buy from the local gun shop. People have a tendency to pull bases from packages and "compare" and sometimes the wrong ones go into the wrong package. A bipod and a dining table can be a cheap substitute for a gun vise.