Hoping to find an answer to a chambering problem. I have a Service Model Ace that was manufactured in what I believe was the late '70's. I have had the gun since new, and have always seemed to have a problem with it chambering. The slide seems to fail, more often that not, to go into battery when chambering a round after firing. This has occurred with numerous brands of ammunition, all of which were high velocity, and with different magazines. I am wondering if it has anything to do with the floating chamber or not. It seems I read something a number of years ago that these guns were a little finiky, but I don't remember the details. Are there any lubrication tricks that might resolve the problem. I probably shouldn't even shoot it, since it is minty and in the original box, but it is too much to resist! Anyone have similar problems or solutions?