ORIGINAL: Cannonball
I shoot a Mathews feathermax @ 70 pound pull, 29 inch draw, ATA is correct, BH is correct, Idler lean is correct and shooting Gold Tip 55/75 carbon arrows. This bow will not shoot bullet holes with the WB. I may try Blazer vanes, but I should not have to.
Your definately under spined! The problem is your arrow , not your bow.
I've tried the 5575's out of my last 4 bows and they were too weak for all of them. I also shoot a 29" draw and I only set my bows up to 63lbs. My current bow is the Mathews Icon set at 63lbs. The Icon is considered slow , especially compared to the Feathermax , and my 5575's are still too weak.
My arrows are cut at 29 1/4" , so if you have room to shorten your arrows and stiffen the spine I'd suggest trying that first. If you want to try new arrows I've found the Goldtip 7595's or the Beman ICS 340's to be much much better.
And as for what you said about trying different vanes and "should not have to" , you are incorrect. A person definately has to try different arrow combinations in the tuning proccess.