Just been checking out old threads.
To be fair to NPUSA I had a 530 X9 of the newer type break on me. It was 9 - 10 months old but used maybe 5 - 7 times. I had rigged the RSS sail and walked to get the board. I heard a big bang and felt my heart sink!
Anyway to make a long story short I wrote Kevin at NP Maui just for reassurance and asked what he would do and he said they would most likely cover it. So the claim was sent to Adventure sports and within a month I had a new mast sent!
I have to say I was very relieved and it restored my confidence in the service. I have always liked their sails, I hope the breakage was a one off!