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For those of you using the "tap the can" method for dispensing DN here's a tip that should help keep a tight seal and keep the screw from stripping out. As your well aware the walls of the metal can are really thin and the hole is easily stripped out if a little too much pressure is applied to the screw when closing. I had this problem recently and this is how I solved it. I cut a square out of a piece of scrap Lexan that was approximately 1.5" X 1.5" and used sandpaper to rough up one side of it. I also used sandpaper to rough up a spot on the can that was slightly larger than the square of Lexan. Using a heat gun I warmed up the Lexan square until it became pliable and then bent it slightly so it conformed to the radius of the can. This was then epoxied onto the side of the can where you would normally thread your screw into. After the epoxy was fully cured I drilled a hole through both the Lexan and the side of the can that was slightly smaller than the screw that was to be used. The screw should be a little hard to start when it is first threaded into the hole and it will continue to be hard to screw in until the screw "cuts" the threads through the hole. Once the screw has been threaded in the first time it will get easier to thread in and out. This was done a few days ago and everything seems to be working fine. Another thing I did to help with dispensing the DN is to take the Dremel with an abrasive blade and cut a slot lengthwise into the screw. Only cut the slot about halfway up the screw. This is so you can back the screw out about halfway and the DN can run through the slot without having to take the screw all the way out. hope this helps, Ben