Nope, never cared for Jamison's "writing" and yeah, I did catch him filling the tank with sugar <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />

Developing a cartridge is simple... anyone with CAD can make the drawings on a home computer (or, like me, you can break out the drafting gear). Since Jamison is an engineer, it was simple matter for him to produce his own drawings. Reamers are cheap, even one-off's... check out Clymer's website. Pressure testing is cheap and easy for anyone with the gear (which Jamison has). Any knuckle head (me in particular) can design a "new" cartidge... it's called "wildcatting" and has been going on for at least two or three years I hear...

How hard is any of this to figure out, seriously?

As to other sources, they shall remain nameless.