Well there's your problem right there!
I went to paint a lot of outdoor iron furniture and collected all my HF hoses - all at least a few years old but with little use - to run air out to the work area. (
photo) All through the project hoses kept failing near their air fittings. With the regulator set to only 120 psi! I kept shortening hoses and putting in threaded clamped fittings continually.
Recently I bought a Diablo hose to replace one of the junkers, but your post is discouraging.
HF had Goodyear-labelled hose a while back. We all should have stocked up then.