How long will it take the packing to wear out of my thrush glasspacks so my truck will finally be loud again? I have had them on for about 6 months now and I've tried pouring water on them when they're hot, but it hasn't done anything. I don't want to have to cut them off, so i'm hoping the packing will wear out.

 

it will take a while-maybe a year or two but they will eventually
Depends on how much youdrive