Some guns just don't like some types of ammo. What kind of ammo are you having problems with? FMJ, HP? I have had two Milleniums, .45 ACP and .40 S&W and never had a problem with either of them. Wish I had the .45 back. I do polish the feed ramp on any pistol I buy regardless of who made it. I use a Dremel tool with a felt pad and jeweler's rouge. I would suggest polishing the ramp and shoot it. If you have problems with certain ammo, then just stay away from it. Good luck and keep us posted.
By the way, welcome to the forum. Lots of good advice here.