Yes, I think that 31" draw is making the difference. My arrows are cut to about 29". Then I added 100 grain inserts with 160 grn STOS broadheads. They fly very nice for me.

I also enjoy practising more with my longbows. My son lives in your area of the world, so I get out to CO a couple of times a year- have elk hunted 3 times. Good success the first time, we went three for five (cows) but not so much the last two trips. Thinking about trying a new area next time. Good luck with your new bow.