Bear Kmag silencer placement question

[B4NZ41]

Used search engine for a while, but I still need a bit of help. I read something about the 1/4 1/3 rule, but not sure what they're talking about.

Bow weight 45#
Bow length 52"
string length 48"
string length from limb contact points 42"

If I was using whiskers id just move the silencers around on the string before I tightened em, but I'm gonna be putting on fuzzy ones for the first time, and I'd rather get it right the first time.

Thanks for any input.    :D