I had a G30 SF at one time some years back that gave me as much or more trouble feeding than any auto I ever had. I never did find out what the problem was. Even after it was worked on it still was not totally reliable. It was accurate but reliable for a Glock it wasn't. I tried the -1 and -1- but it didn't seem to matter.
Nothing to date has proved the reliability the 4506 has given me. A lot of people bash Massaud Ayoob for various reasons but he was the one that turned me on to that pistol and I've been most grateful. Mas, if you see this, thanks a lot!!