If anybody knows anything about Kimber 1911’s you will need to do the 500 round break in, there will be some issues with them till then, they are noted for this, there tolerances are very tight, it took my old Custom II in 45 quite some time before it feed 100%, this is one of the reasons Kimber gets the bad rap on there 1911. Kimber’s are not like Springfield, Colt and other manufacturers, which my new Colt Competition 45 has had no issues, my RO Operator in 9mm had a few due to an underpowered recoil spring, changed it and gun was fine since then.