9 out of 10 issues with firearms ftf its either a bad magazine (which is most often the case) or limp wristing. you were just that #10. sometimes guns just need a little love they didnt get before being shipped. no one here has your gun in hand. if i had it i woulda tried various mags which i have on hand and i know work on various 1911's. i dont think ive ever paid more than 15$ for a 1911 mag. the majority of my 1911 mags have been knocking around since ww2.
my point is the folks that gave ya the advice about mags were on the right track since that is most often the case. my last resort is always in sending a gun back to the manufacturer for repair. glad ya got it fixed.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent