So whats the deal with this: I've been shooting Easton FMJ 400s, cut at 29 3/4" with 100 gr heads off my HCA Iron Mace for the better part of the year. No issues with flight or anything. I shot a bear shaft last week and noticed I was getting a bad wobble with the arrow sticking in the target with the nock to the left of the point of impact. This would indicate a weak spine. Correct? I tried both 85 and 75gr points. I was shooting 64#s, but have backed it off to 60#s. I am also trying some ACC 3-49s, same length. I am noticing some odd if not erradic flight. I am assuming that the spine is just too weak. The bow is tuned, and though I'm not perfect, my shooting is solid enough to rule it out, and I have a few other semi-professional opinions on that. Is my problem my arrow spine? The charts say I should be right on or even a little bit too stiff... I don't really want to throw out $300 worth of FMJs and ACCs. What can I do?