In the grandfather clock I built, the sound of the chime is much lower than my other clocks [mantel or wall]. The hammers have all been adjusted for the loudest sound possible; however, whether on the hour or quarter-hour, the other clocks can be heard from other rooms, even if the TV is on, whereas for this grandfather clock, you have to be in the same room AND listen for the notes. After closer examination, I noticed that the door, which has the full length of the clock, has a little gap between itself and the case. That gap varies from 1/8" to roughly 1/4". The top and bottom of the case are sealed with caulking and the back panel is screwed on and very tight all around. I realize now that in installing the brass hinges, I should have made a deeper groove. I am afraid that in trying to fix that mistake, I may damage the finish. I was wondering if installing foam weatherstripping between the door and the case would help obtain the drum effect for a richer, deeper and louder sound.