RE: 60 or 70# limbs?
Alright I thread I can add to!
My 2006 61# Tribute at 29" draw & nothing on the string except the loop and one bowjax on top.
SMOOTH MODS-
405 grains= 269
385 grains= 275 fps -this is what I currently hunt with.
When I switched mods the speed mods added 8 fps.
I prefer the smooth. The speeds felt (to me) like the draw my 65# Patriot provides even though the Tribute is only pulling 61#.