Recently, there has been a lot of discussion of the Svea 123. Not having used mine in awhile (I started using a Trangia) I dug it out of the attic and started fiddling around with it. The first thing I noticed was that it stank. Smelled like a dirty carburetor. I decided to disassemble it and remove the neck and wick, then flush out the inside of the tank with carb cleaner. However, the neck does not want to unscrew from the base and I am afraid to really torque down on it for fear I'll break the *@#! thing. Have any of you ever taken one apart and if so, can I really apply force to unscrew the neck? Also, does it take some sort of sealant between the neck and base on the threads to seal properly?