ZERO ! Don't pay whomever a red cent. He or she wants to charge you for what ?

A new gasket should fix the problem. You have to make sure it is seated corrected and once that happens, I push down on it and move it back and forth as much as I can to make sure there's the best seal / fit possible. I am frequent flyer on S T D dot com and I have never heard of anyone wanting money to post some snappies and to discluse the "secret" of installing a VC gasket. There's a good chance your VC is just warped. It happens. OR, and the big OR is, is he or she selling you a mod'd VC ? If that is the case, then yes mod's and R&D cost some money, but not the snappies and a thread.