My GX CS4 has been filling tanks and guns for over a year with no issues and lots of fills.
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i just might do that. its the next project on my never ending list of things to do...Everyone that has one of these compressors should do this mod. It's easy, free and gives a real benefit. IMO, it should have come this way from GX.
How to cool a cs4 or cs4-i, even better than just bleeding the air pocket.