Leaking jacketed air hose

Been frustrated for weeks with my Shoebox compressors. I have 3 of them that I continue to nurse along. Almost pulled the trigger yesterday on a new compressor but had a miracle happen. The best I can get out of the Shoeboxes is 3000 psi and then they just sit there. I bought a 5 dollar bottle of leak detector at ACE and have sprayed all the fittings in the system. No bubbles. Then I happened to spray the stainless jacket on my Diablo filter that I bought from Airguns of AZ a few years ago . Wow foaming bubbles galore. Removed the filter from the system and pumping air finally! I now realize I have 2 working Shoeboxes maybe 3. Back in business. Happy camper.

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I'm glad to hear you got your Shoebox compressor working.

I really like my Shoebox, I'm not sure what I am going to use to make air if/when mine dies ??
If it's a legit oldschool shoebox, I bet there's a bunch of good parts in it that could be available with a McMaster-carr or grainger. I think AVE refers to these as "industrial Legos".