I received my magazine rebuild kits today and they seem to have fixed my issue. Overall I am not sure I really saved any money but at least I did not loose any on trying cheap mags. Putting the rebuild kits in the Metalform Ultra mags let them keep the 8RD capacity as I assume they would in any of the longer tube mags. I also received a few of the 7RD mags for a nice flush fit option for carry. Very happy with them as well. So if you have some cheap mags, I can say these rebuild kits work wonders.