I would suggest that even if the whiskers or string silencers were installed by anyone, and it was the cause of creeping, that it wouldn't take it long to stop once settled in. The creeping is something over time that doesn't seem to stop. Settling in is one thing, contiually creeping is another. FWIW, Pierre installed the string puffs on mine.
I was actually wrong, 2 of the 3 are creeping. Lost about 1/4 inch on a curve that hasn't been shot in over a month. I haven't shot anyhing with a "D" in front of it that doesn't creep. These SBD strings are quiet though unlike the D97 ones, and shoot very hard. Not knocking them at all. Great people who make a good string. God Bless