I've been using a small disposable in-line filter/dryer branded as "Speedaire", on my PP256, mounted just after the unit's air regulator. Grainger has these in 2-paks for, I think, $18.00. They are small, but rated for 125psi and 15CFM. I get consistent steady cutting with one of these installed. Also, instead of throwing them out when they turn pink, I remove the nylon protective cage and just place the filter on a trivet on top of my wood stove until the beads inside turn back to blue.
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