ORIGINAL: N1EDM
Well, this notification came in OK for me... thanks.. I noticed that I had been subscribed but hadn't been getting the notices. I unsubscribed and subscribed again, and now I seem to be back in the fold.
The tin foil idea seems to work OK. Yeah, you have a point about it tearing. What I did was to depress the valve a little way with my fingernail, slide the foil in, then release the valve gently. Just checked for minimal drag on the foil. I handled it gently, so it didn't rip.
I hadn't thought about the celophane from a cigarette package. Does that mean that I have to take up smoking again???
Bob
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As long as you can see some light between the pushrod and the rocker arm adjustment screw, it's okay. It really isn't critical at all.