If you go to the bottom of that link, Presscall (John) has a link to his thread where he explains what he did. HJ only explains how to use butane to fill the Powermax canisters. I have about 10 Powermax canisters, have yet to use the stove on a trip, just fired it up a few times in my garage. Soon. There are some new sellers on eBay now, but they want a ridiculous price, I picked mine up with shipping for around $11 per can, 3 per shipment due to regs. The sellers now are charging over 50% more.

Ah, the seller I bought from has the package of 3, shipped by ground for around $33, snagged three more. The other sellers are rip offs. One seller even has free shipping for one canister at $30 a pop. Rip off city!
Duane