[TR] TR6 (ZS) carb needle valve - gasket

[lee at automate-it.com]

I'm cleaning up the float chambers etc. on the ZS carbs - ('74 TR6).

The new needle valves I have came with two gaskets, one aluminum and one 
fiber.

Upon opening up my carbs, I find that one needle valve was installed 
with the metal gasket and the other with the fiber gasket. (Haha another 
adventure from the DPO!) YouTube provides several rebuild videos - and 
in one case they use *both*, and in another just the aluminum one. Then 
the Buckeye Triumphs rebuild page shows only the aluminum gasket in use 
(and suggests that the correct thickness is 1/16"). And I tend to trust 
the Buckeye site more than random YouTube vids!

I recall using the aluminum gasket in the past - but then I've slept 
since then. And yes, I know that the float height will be different, 
I'll get that adjusted correctly.

Any recommendation here?
Thanks!
  Lee

P.S. Since I wrote this, I've gone ahead and installed with the aluminum 
gaskets - I'm pretty sure this is preferred for these carbs. But I'm 
interested in any thoughts about this!!