If you look, all I did was take the old attachement, cut it off, file it down, stick it in the end of a coupling nut and brazed it. Coupling nuts should be available at any decent hardware store. You could hack and file, then take it to any welding shop and for a cold 6 pack get it brazed at lunch time.
A cheap propane type torch with a MAPP gas canister will give you enough heat to braze it yourself. It's very simple. Heck, silver solder would work as well. All the force is in compression. All the brazing does is keep if from falling apart when your not pressing the pedal.
One of these would work as well and are handy to keep around.
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=42099