Re: Paasche VL Dual, action button is STUCK!
I'm curious Gunterhaus, how did it turn out? I used to be the service agent here in Australia for Paasche airbrush, and over the past 25 years I found them helpful.
The problem you mentioned is not uncommon with airbrushes (can happen a lot with older and gravity feed type airbrushes). Usually paint material gets back pressured into the trigger/plunger area and dries there. This happens because the packing washer on the needle is old or just loose and as many people do; the block the air cap to blow paint back into the reservoir.
Myself??? When they are old and nasty (happens all the time), I chuck the whole darn thing into lacquer thinners, which will get most any paint to let go. I then replace every "O" ring and adjust the pressure on the new packing washer to prevent it happening in the short term. I still use "Needle Juice" by Badger and lube everything.