Hi, I'm in the group that says don't go overboard about tightening screws. So many times a screw is tightened is compromising the wood that secures the screw if you are not using a (T-nut) which uses metal threads versus screw metal against wood. I've taken a lot of Dynaco A-25's woofers out and the gasket sealing the woofer is about as thick as the paper wrapping on a pack of cigarettes. If you threw it up on a windy day it would fly away like a kite. The aim is to make the woofer or tweeter air tight and the solution to me is the gasket. I use modeling clay or More-Tite which is strings of modeling clay, that does not harden, on a roll from the hardware store for old windows that leak cold air in the winter. When you put your woofer or tweeter back in the enclosure, screws are almost not even needed and act more like a safety factor. 1 drop of painters caulk with silicone should keep those screws from moving once you put them back in and since it's flexable will let you unscrew the screws when you need to with a little more wrist strength. This way I get air tightness plus the (de-coupling factor) of the woofer against the wood or metal enclosure. Speakerlab from Seattle, a speaker kit company never even used screws although I certainly would, safety factor. That always puzzled me until I took a speaker apart. Here's my tip: When you put the screws in or out, use your free hand as a barrier between the screw and the woofer because your screw driver will jump out of the screw slot and a Band-Aid is much cheaper than a woofer cone replacement, I've been there. I'm not trying to be a dink or rain on your parade but am just putting in my 2 cents from older guy experience...thanks guys.....Mark Korda...PS. As a house painter, the rich people I work for make me take off a screen door every fall and put it back on in spring. The hinges are such that I can't take out the hinge pins,only the screws. After a few seasons the screws just spin around in the wood and I had to replace the wood trim the hinges were screwed into once already, and maybe again this fall. The trim is solid wood. Particle wood is even worse for maintaining the threads (female) for the screw, no pun intended.