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I was able to fix the reed valve o ring being to big due to wear by taking the o-ring out and using a shrink wrap heat gun on low to shrink the o-ring such that it would fit correctly and lubed with lith grease. Lith grease for the piston. Now cranks out air. Dry rotted yellow air line I used a $4 yellow plastic line from harbor freight and adapted the chuck for a standard air chuck with a locking lever. This is the $35 Harbor freight general 4 screw metal pump. All of these yellow plastic lines on these machines dry rot to pieces.