Do you use the stock mid pipe gasket with a Q4 slip on?

Going to be installing a Q4 slip on with the stock head pipe tomorrow and I was wondering if you guys used the stock mid pipe gasket that is part of the header? The instructions don't say anything about ....just to use high temp silicone on the FMF adapter and the pipe slip joint area.

Do you need to remove the stock gasket?

The adapter sleeve takes the place of the stock muffler gasket.
So, no, you don't use the stock muffler gasket when using the adapter sleeve.

Thanks that is exactly what I wanted to know.