Might try skiving the fold on the inside a little to help it fold where it is supposed to fold. I usually do that anyway just to help it flatten out a bit at the tip where the fold is the tightest. Nice work man.
Pat
Very interesting way to go about it. Definitely gonna jump on board.
BTW my stepson was just accepted to train for a chance to be in Marines special ops. Hope his hard work pays off.
Pat