Park,
If there is one thing I can't stand, it's "finger pinch". I also have a 30" draw length and I shoot split finger with a tab (one over, two under).
My first "real" hunting bow (year 1973) was a one piece 60", 40# @ 28" Bear Super Kodiak recurve. When I shot this bow straight for 30 minutes, it gave me me a sore index finger because of my 30" draw length. It affected my accuracy because I started paying more attention to my index finger soreness than I was to aiming.
I ended up selling the Bear SK, but I regret that now since it would have made a great "wallhanger" for me since it was my very first hunting recurve and it was a "LOOKER".
I bought a Bob Lee 64", 44# @ 30" Signature Hunter take down recurve and after shooting this bow for one hour straight, I noticed the issue of finger pinch again, but not as severe as with the Bear. I shot this bow for a few years, but I ended up selling this bow too.
My next purchase was the right purchase, for me, because I finally beat the issue of finger pinch when I bought my first 66", 42# @ 30" Blacktail take down recurve. I could shoot this bow for three straight hours and never noticed any sign of finger pinch. I loved this bow so much and without the issue of finger pinch, I bought a second 66" Blacktail, 37# @ 30". I've shot this bow for five hours straight one day. I couldn't stop shooting it and didn't want to quit shooting it. My wife literally "dragged" me into the house and that's when I quit shooting it. No issue from finger pinch either after this long shooting session. I might add since Norm Johnson, who builds Blacktail recurves, has a 30" draw length like mine and Norm's bow is a 66" Blacktail take down recurve, Norm suggested the 66" length because of my dislike for finger pinch and he was right on the money with his suggestion for me.
Let me also say I'm a small framed guy, 5'9" weighing 160 pounds (on this morning's bathroom weight scale) with long orangutan length arms which gives me my 30" draw length. My fingers are small like a young girl's. My middle finger is 3 1/8" long and my index finger is 2 7/8" long. Since my fingers aren't long and they're skinny, my index finger notices finger pinch first and lets me know about it.....real quick. I think someone with small fingers, like mine, will notice the issue of finger pinch sooner rather than someone with much longer (and fatter) fingers than mine.
This is why when I said "if" I had a shorter draw draw length; say 29", for the Bear TD, I would choose a "B" riser with #3 limbs for a 64" length. In closing, finger pinch always occurs after long shooting sessions.