Hate to say it, but I've got one in the shop that has been on a couple of bows and then put back in the package. The NAP 4000 seems to be the one that's selling and continuely working good. Not to mention Golden Key was terrible with getting these to the distributors in a timely fashion. All I can say is give it a try if you like, but I won't carry them at my shop anymore.

maco12