magazine/round feed problems on stealth

I have a stealth. I bought the magpul asic-style pmag. The problem I have is that on all three magazines that I have I am having feeding issues. Either the bolt won't pick up the round or if it does the bullet hits the front of the chamber and i have to back off it a little and try again...and it usually will feed then. When I push up on the magazines as I'm running the bolt forward it always picks up the round but will hit something and not chamber or drag across the feed lips. I thought of buying the accurate magazines and trying them...but I don't want to spend the money and still have the problem. I searched the forum and couldn't find where anyone else was having a similar issue. They certainly feel sloppy and loose in the magwell. Any help would be much appreciated.

You may need to sand the feed lips to allow the round to sit higher in the mag. I've never had a Savage feed from an AICS style mag without doing a lot of tuning.