I hope I'm not jacking the OP's thread, but I have the same situation that he describes, only slight nock leaning to the left problem. I am shooting an old Bear Super Kodiak 45# @28". I'm shooting 27.5" 3555 Gold Tips (per their chart).
I get the same results when I shoot the same arrows from an old Darton Ranger 40-45#. Using 100 gr. field tips on both. After I move back to around 15 yds, the nock leaning left disappears. The arrows have 4 inch vanes (artifial feathers?). I'd like to use a 125 gr. or better broad head, but am afraid that would increase the left lean. Any ideas?
thanks, Dan