Originally Posted by f8al
Check your reg seat in the velocity adjustment screw. If you see a definitive ring worn in to it flip it over or purchase a replacement from MD or a service center. Also make sure you have a good name brand battery (personal recommendation of Duracell or Energizer) in the marker. Relube the marker and reg and ensure the proper oring sizes are where they should be and let me know if that changes anything.
i lubed up the bolt, gunna take a peak at the reg tonight. only have the orings the marker comes with for spares... think it is worth it to get an oring kit? dont want to throw away even more money at a marker that is not working! iv tried 2 different techs to fix it (non were straight from macdev though, only local)