i own a springfield G.I. champion with a new trigger and ambi-safety installed. everything else is stock my gun stovepipes quite a bit and i just finished reading the sticky about reliability. it malfunctions on several different types of ammo. the casing also shows a flat spot after ejection, on every single casing. also the rounds may not feed the first round properly. I'm not sure if i need to just polish and round the sharp edges or if i need to do all of the things recommended in the sticky. any help would be appreciated.