I just got an Iwata TH2 airbrush/paint gun. It comes with a large metal cup with threads to attach to the brush. Anyone know what that thread size is? I have looked everywhere and can't seem to find the thread size. I was watching a Createx youtube vid and they were using the TH2 to paint base for a small project with a plastic (looked like a standard paint gun cup) cup. I asked them and they said theirs was a custom made one that attached to the supplied metal cup. If I could get an adapter I was thinking I could use a standard plastic cup system. Anyone know specifications on the TH2? Thanks for any help.