Rick,
Jullian's link is for a pipe bushing. What you need is a pipe thread adapter that has a 1/8" male pipe thread by 1/4" female pipe thread.
Most NAPA stores carry Weatherhead fittings. The Weatherhead number is 3200x4x2. Follow the link below for a pic. Scroll down to "adapter".
http://www.plews-edelmann.com/...868&location_id=2516
Here's a link to NAPA:
http://www.napaonline.com/Sear...tk=Keyword&Nty=1&N=0
John
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