Let us know if and when you do find out, real curious about that one myself

Thanks for all the input. I'll have to watch what I'm doing. Yep pretty sure from both different batches. The first batch of arrows came with the MQ1 I bought off ebay. The bow was completely set up and ready to shoot. I didn't touch aqnything. I haven't shot hundreds of bows in my life but this one is the smoothest ever. So it wouldn't seem to be anything mechanical. But my other bows were much older models of various brands. It's just weird that it seems to be doing it when I'm not around, after the first 2 times I carefully inspec the 4 arrows when I pull them out to see if it just happened. Then I never notice them until the next time i shoot in the backyard. My son is aware NOT to mess with these. The MQ1 is set for 65-70 pounds, standard 2 prong rest, nothing special. I have already trashed theother arrows so I can look at those again (careful of CF spinters). I'll keep in touch if it happens again.