NP will never answer you directly. I had the age old problem of the luff tearing, and seams falling apart. After many posts on the old NP forum, not once did any direct representative from NP give an answer, only the odd distributor. And not once did any of them admit to a fault in the sails...oh no... it was all my fault according to them.
Vote with your pounds, dollars , rands whatever, buy other brands. I went over to Ezzy - 3 years ago. When I initially got the sails, I was battling with rigging. Emails were sent to Dave himself...surprise, surprise, he answered everyone promptly. And no the luffs do not tear or seams fall apart!
NP is just a cheap make of sail with a huge amount of marketing behind them..forget them...go elsewhere.