This was posted on RCM quite a while ago so you guys may be aware of
this already, but if not check out this site:

http://longislandindicator.com/index.html

It is for Long Island Indicator. Scroll down to the "Do it yourself"
section for great DIY info. Tons of other interesting, useful and
specific info on their pages. They sell parts and tools to fix such
things, too.

All standard disclaimers apply, no connection, not even a customer,
just like their website, weight not volume, blah, blah, blah...

Hope that helps.
-AL A.