Help Petcock spraying fuel while running - ZXR250C

Notice a puddle of gasoline on the floor while idling the bike, took a closer look and saw fuel literally spraying from petcock area.
Checked closely its coming from the diaphragm cover
Anyone face similar issue before? Where can I get a rebuilt kit for ZXR250C petcock

Symptoms: slow leak (A drip in a minute) when there is no vacuum applied, fuel spraying when vacuum applied

 

From look of parts, it appears you can use K&L #18-2763 petcock rebuild kit. Same as for EX250 of similar vintage.

http://www.oemcycle.com/Item/product/900058259

 

took apart the petcock and found a busted diaphragm

 

Wow, that's pretty bad. Won't cause external leaks though, so outer seals between halves are also bad. Might as well rebuild entire petcock.