I have acquired a stainless Bauer that appeared to be unused when I bought it. My problem is it won't pick up the next round in the magazine. I cleaned, oiled, hand cycled it a bunch of times; did this three times. When I work the slide it feels crunchy( best way I can describe it) at the end of the travel, like a bunching spring such. Should I try different ammo, currently have some american eagle, or take it to the smithy to figure out. Any suggestions?