Cylinder mounting seats are not strong enough to resist 10g force. They should be re-enforced at first convenience.
Fusible pressure relieve valve is rusted and should be replaced.
Gage mounting should not rely on the tube rigidity but should be independently secured.
Should be rigidly and independently mounted.
Steel fittings should not be used with stainless steel tubes. This will cause galvanic corrosion and leak in the long run.
Both LP and HP gage mountings should not rely on the tube rigidity but should be independently secured.