+1. With John P. And I will add that gradient line holes are more suited for asyms, you'll do more with those than holes down the VAL.
1.) Yea, his numbers are like a little less than 300 total, counting the unsanctioned ones.
3.) with my axis rotation and mid to lower speed, I like using shorter pin to PAP's, my BM is 85x3.25"x45 on syms(basic label) and 75x3.5x35 on asyms. I can adjust the VAL angle bigger on asyms for stronger or smoother balls. I like to use P2-P3's, I only used DT holes on weaker balls.
5.) The bowtie will adjust with the flare of the ball. More flare, wider bowtie, more ball coverage. I will tell you I'm not fully informed enough to tell you anymore than that.