I hear ya on the 'send them back'...but what I really want is a head that I don't have to worry about sending back when it leaves my bow.
I've been using needle points on my Zwickeys for two and a half decades, and I've only really bent one that I modified and removed too much metal right behind the tri-lam. I have minutely tippy tip curled a few on TX rocks, and I just filed them down to a tanto and back in buiz they went. I did chip one about an 1/8th once after passing though an animal. My tips 'sort of' get modified in general sharpening, but they are still pretty 'needled'.
I do pyramid the tips on my Wensels to strengthen the tips.
So, if you need to modify them please do so as you need all the confidence up front that you can get....cause a warranty aint gonna draw blood.