What kind of GoldTips are they?

I have heard from credible sources that it is possible to shoot the spine out of them. I have a spine tester that is VERY consistent at work and I haven't seen this with my own though. I have had about 8 dozen over the last 18 months as well, and some of those arrows had well over 10,000 shots on them and still spine, and spin tested fine. I think every arrow I have had that spun and spined well when I first got them were fine after several thousand shots on them.