i might as well ask another question i have for you then regaurding the guardian. I heard that guardians' fps are more sensitive to variations in DL and DW than other bows, is this true?

I'm shooting it at 70 right now, but am probably going to back it down to 60, now that the weather is cold, and it becomes a lot harder on the body shooting tons of shots outside. What do you think the fps would be like if i dropped it down to 60#? For target shooting i'm using gold tip arrows w/ the included inserts/nocks, cut to 29", with 100 grain head. on the string i have a tubed peep, a kisser button, and the rest is a whisker biscuit.