just picked up a 425F with some history (stamped for Feb of 1980) at my local Goodwill for $4.99. Thanks for this site, the photos and comments helped me greatly in figuring out how to use the stove. I fired it up last night and was very happy to see it worked! The only tweak i made (aside from cleaning it) was to "fluff" the plunger in the pump. I saw Walmart had replacement Coleman pumps for $8 but figured I would try to tweak mine before spending the extra $. The pump was not working. so i took the existing plunger out and kinda flattened it a bit, so it fit into its tunnel tighter. it worked immediately. Judging my the cracks and brittleness of the plunger, I think I will be replacing it soon, but i was super happy to be able to take my $4.99 Goodwill treasure and fire it up with no additional cost! The stove is rusty and was very dirty. I ended up wiping the stove down with a rag and some WD40... is there a better way to clean/preserve the beat-up metal (without putting any/much money into things like repainting)? Do I need to de-pressurize the fuel tank before storage? if so, how is it best to release the pressure (aside from letting the pressure run out while cooking) Is it OK to store the coleman fuel in the tank if I only use the stove a few times a year?