or just use tape and cover the edge where the housing leaves a gap as @Armaegis said. Using tap, I too experience tighter bass, liking the change in SQ tape will remain.
Sealing the driver to the housing. Didn't think it would make much of a difference either.
Ok you guys got my interest. I will try with tape first since it's in stock. =) I need to unscrew the 4 screws and remove the plastic ring on top of the driver first, I reckon.