[Roadsters] U20, Upper Chain Tensioner, Spacers

[nmleeds at mindspring.com]

Mates,

I'm not happy with how much slop my upper chain tensioner has at low idle.  I know that some people put spacers on the shaft of the tensioner so to take up some of this slop.  Two questions:

1) What do people do about low idle tensioner slop?  
2) Does anyone know what the diameter of that shaft is?
3) What materials work well as spacers (oil/heat resistant) and soft enough that they won't damage the tensioner?


Nathaniel Leeds
'69 U20 SU
Running, rough.