I seem to recall an old thread where somebody made a pretty solid repair by using a schrader valve (tire valve). You could probably dig it up by searching on "schrader valve". (Better check the spelling, I may have it incorrect).
2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg
And remember folks, Only You Can Prevent Hilliary.