Sorry it this has been posted before but I could not find it. I found several gold spots on my glock after cleaning it in the ultrasonic cleaner a few times. The spots are around the number stamps and groves on the slide. I also can see a few on the rail area of the slide. The cleaner used is not supposed to do anything to the finish so I don't know what it is. The question is have any of you come across this issue with your Glocks. Is it something like the finish was not put on correctly. Note it is not rust it is a gold color and will not rub off. Thanks for any info. Bigguns911.