Had my New Custom II out on the range for the first time today. Worked well until I put a full 8 rounds in the magazine. It would not feed round 1 and 2 but from that point on it would work fine. Sometimes it would partially load the round 1st or 2nd and sometimes the round would remain fully in the mag. Again, when I got down to 6 rounds in the mag it worked fine. Shot about 80 rounds. 50 Federal American Eagle and 30 CCI (?) Blaser. Any ideas?