I have two Accuspray #19 hvlp conversion guns. I use one for solvent based clear finishes and the other for water based. That is coming to and end. Accuspray brand was bought out by 3M years ago. The old style guns are discontinued and parts are rare. I need to replace the Delrin tips that screw onto their steel needles. But, I'm told that if you can't find them on Ebay, your out of luck. So I'll try one last shot to see if any of my NCWW friends knows where some of these tips are hiding? I hate to pitch two guns for lack of some plastic tips.