I just picked up my new shafts - and when I get them done they should be ~300gr. I will have my ' 02 Pat SC set to 60# with a 27" draw - I plan on checking the speed thru the chrono before & after the hush kit silencers & I' ll let you know how much of a difference it makes in speed & noise.
Also - FWIW - while in KC @ Nationals this year one of my string silencer ' fingers' broke off my top silencer during the 3D shoot. I cornered a BowTech shop owner I know & respect & he told me that they have been tying a small serving to keep them from sliding - he tells me that because mine slid down & ended up colliding with the one on the buss cable it broke.
Now my top silencer is missing 1 finger...[

] good thing it' s not the middle one!