Further examination of the symptoms and general rough running had me check the dipstick. It was at the correct level, basically making the end of it wet. I pulled the air filter and sure enough, it's full of oil with @ 1/3 of a quart in the bottom of the airbox. The original hose was blocked with what looked like white grease, and of course plugged with the plastic screw {thank you U.S. EPA}
My solution for the problem was to try and kill two birds with one stone. I drilled and tapped the transmission filler plug for a 1/8 27 NPT fitting and drilled and tapped the airbox for the same fitting, then "teed" them together just under the air box at the original drain and run the rest of this clear hose out to the chain and secure it with a tie rap to the chain guard. If this prototype system works out I'll dress it up with proper AN fittings and braded hose for the proper "cafe" look.
After washing the air filter out, the bike runs much better. I hope this will explain the differences in plug/pipe color. My thinking is the left side was running rich because the bike rests on its left and the oil collects on the left side of the airbox and perhaps tends to oil the left/down side of the airfilter when the bike is on its side stand . Fingers crossed!
Thanks to everyone for the suggestions that led to this attempt