Copper oilline from flex line to gauge-

If you need to replace the copper line, Pep Boys (or any store that
sells Actron/Sunpro guages) has a plastic tubing kit that will replace
it fine.
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Flex line restrictor
About .046", not much larger than the hole in the relief valve plunger.
Stude part number is 1549669, or you could buy a 'blank' fitting and drill
it out with a #56 drill bit.
"Dwain" <jdwain@comcast.net>  Aug 2004