Yeah i was pretty well impressed i only expected it to last 2 weeks, not over a month. You are welcome, that's what forums are for, to share knowledge, chat rubbish and help each other out. Wouldn't you need to slightly redesign the insert so there's somewhere to hold the seal? Something like 2 o-rings, one that sits just inside the bottom section of the zippo case to seal any leakage / evaporation from the bottom. Then one that sits just high enough to create a seal when the with the lid when it is closed. That idea would only need to small indents make in the current insert to hold each o-ring. Or you could even go as far as to design a new insert for the zippo, that still uses lighter fluid rather than gas. It could have a press fit seal with an o-ring for the bottom solves the leaking from that end. A slight redesign of the wick area - raise the wick exit slightly, so you are able to put an o-ring seal just below the wick. Add a hinged lid that fits inside the current zippo lid, with a small tubular protrusion that engages the o-ring seal around the wick. You'd have solved the leaking problem from both ends. There's two ideas to solve the issue, i bet someone else could come up with something better.