Hi all, I am new to the forum and also a new owner of a used STI DVC Limited. It is not the island version. It has an x line trigger in it and when I bought it I swapped the medium shoe to a short flat shoe. No other modifications were done except a good cleaning. I was practicing for a match shortly after and had the gun fire twice with one trigger press. I shot about 250 rounds that day and only had the issue once. Fast forward to this last weekend at berrys red rock rumble and it happened one more time over the 2 day match. I am not having any hammer following issues at all. Ammo is 1.1185 180g at 172PF. Any idea what this could be? Thank you for the help!