How to clean the tiny holes of air bearing tonearm

Isopropyl alcohol isn't that harmful- just use common sense precautions. Acetone, however, you need adequate ventilation and you need to protect your hands (acetone dissolves the oil in your skin and dries it out).

Also, I could be wrong on this, but how about trying 'canned air' and gently blow on the holes?

Crem1, I know, I use this stuff daily for various things. As long as there is no open flame, its safe.

Thanks for the info, Crem1.