Wow! When I read the thread line I was going to recommend an Endocrinologist. :lol: I never had that problem with any air compressor and I've used diaphragm, piston, oil lubed piston, and I now use a commercial compressor used for Flagship Models pressure casting. My dad also owned a body shop and we never had the problem either. We had a water trap attached to the line coming from the compressor (as I have now on my commercial unit), but since we had a 50 gal tank, the air always had adequate time to cool down unless the compressor was under heavy use (which it was at times). As mentioned, I now have a trap on the compressor AND a trap coming from the air line in my office.
Interesting problem though. You must have lots of humidity where you live. I was also wondering if you used one of those thin, plastic hoses that comes with some compressors. If so, that may be the problem since the stiff hose is narrower than the rubber braided hoses most guys use on their air brushes. The narrow, stiff hose would not allow for any expansion and the plastic could encourage condensation. The small diameter would only exasperate the problem. A larger diameter rubber braided hose may be the cure, but you seem to have the problem solved. What diameter/type of hose did you have before, and what diameter/type did you add to remedy the problem?