Thanks again!  If you get it working you will be pleasantly surprised how nice it is to shoot.  blackhawk has several others with very narrow tips.  You should take a look at others he has made as well.  Lot's of other people here do too.  TBB4 has some good examples and does a nice job explaining why this design element can help improve efficiency quite a bit.  I am by no means an expert but it is also important to reduce the thickness as much as you can.  The goal is low mass with no or very very little bend.  A fine line when you get really narrow.  Good luck!  I'm sure it will be AWESOME!