Valve problem

I have Rays Nismo wheels on the 180sx , and one wheel is constantly going flat on me .
I have found the problem to be the valve .
Trouble is its one the below type of valve , and my local tyre lad hasnt a clue where to find a replacement.
http://www.wheel-weight.com/photo/bi...r-OTR-Tire.jpg
I tried to seal it with epoxy , but it still leaked through , im tempted to use liquid metal but i'll hold off on that until i run out of options.

SO any ideas where i might be able to get a replacement valve for the wheel

Try dirko rtv silicone, it's thicker than normal silicone and more flexible than epoxy, had the same problem before with them valves, I drilled the hole bigger smoothed the edge and fit normal valves. try jeep alloys or truck wheels they have them valves.

ya can get rays ones on ebay lad !!!!

Cheers lads ,
I reckon , this might do the trick ...

http://www.ebay.com/itm/90-DEGREE-CH...e#ht_592wt_740