none of the duallies i've seen have the string silencers on the cables like the single cams.

also, stick with the gold tips, just get the 7595 shafts, i've been shooting the 7595 pro hunter shafts out of my 72# 29" for about a month and realy like them.

the buttons do come stock from the factory. i cut mine off can't tell any difference in noise nor really speed (gained 1fps 5 shot avg.)