Hello everyone first post. Wondering if anyone can help me out? I have a new (400rds) M&P pro that I bought specifically for IDPA esp. I switched mag release to lefty because I also shoot a vp9 in SSS and use my middle finger of my right hand to release the mag. So here's the issue... I am getting failure to feed and stove-piping on the second round if I only load 6 rounds in the mag. The gun seems to cycle fine if the mags are loaded to max capacity. Any ideas? Thanks in advance.