It doesn't matter here what the brand is g4l, a good break in, and a fluff & buff of the feed ramp with some Flitz, should do the trick on 99% of 1911's.
+1 !
And on many other guns as well. My "Baby" Desert Eagle .45 ACP had a really rough feed ramp. In fact I'm surprised it made it out of the factory in that condition. I took a pencil air grinder with a small 1/2" dia. Cratex Wheel I dressed down slightly to around .460 dia., and gently started it in an up and down motion along the center of the feed ramp. I continued this until the entire ramp was smooth and void of any tool marks or rough spots.
I then switched to a hard felt wheel of the same diameter and applied a liberal coating of Flitz Metal Polish. Using the same up and down motion until the entire feed ramp was polished to an almost diamond polish, mirror finish. Afterward I gave everything a good wet cleaning with clean Kerosene, blew everything dry, gave it a good lube job and it runs like a scalded dog with any ammo I stick in it.
The trick to doing this correctly is to use no more than a Cratex Wheel and
take your time! Too many guys will Bubba a job like this because they remove too much material with too coarse of an abrasive. Stay away from sanding drums and the like. They'll ruin a good barrel in no time at all. Be patient and stop every few seconds to check your progress. When you're done you'll have a weapon that will feed most any ammo without any issues what so ever. Bill T.