sjl2012 said:If you do have a fold developing in the back of the call you may not have a good seal. It's more common in callers that set calls farther back in their mouths and they generally develop as the tape gets softer. Trying a notch isn't going to hurt. Start out small, half the width of the fold and half the depth to see if it flattens out and seals. You can always take more off but can never add it back.