Not with the ATX. I thought the ATX had the comp trigger that had some slight changes by the manufacturer to address reliability?
Now the one in my AT (original Comp trigger)...it's got about 3 miles of creep between the two stages now (after about 4-5k rds). It's never failed though. Worn? Yes. Failed? No. One of these days I'll take the time to sit down and adjust it back to where it should be.