I have a Galaxy Elite II (Traditional) recurve bow at 35 pounds (due to a shoulder injury) My draw length is about 29" - 30" and the arrows I have are 30" long and a .500 spine. ~110 grains up front. I'm getting pretty noticeable nock left, and a little high (need to adjust my nock point) I thought that nock left means my spine is weak on these arrows (meaning I need to go STIFFER to something like a .400 grain), but when I posted this question on another forum 2 guys were saying I need to go "up to a .600 or even .700 spine" This confused the hell out of me. The arrow charts for my arrows (Carbon Express Predator II 3050) say I should be using a .400 spine.
I wish I could help, but don't know much about traditional bow / arrow tuning. There is a traditional forum section down below this one a ways, this question might get better exposure if posted there.