I cleaned it real good again then waited a couple days for oil to appear again. This time I ran a q tip around the drain bolt and crossed my fingers it would be any easy fix. Clicked on the black light...no glow on the q tip, so unfortunately I think it's safe to say it's not the plug. At this point I wish it wasA lot going on here. There is no gasket, this is sealed with a sealing compound when built.
1: Check that those bolts in that area are tight. No downside to doing that beyond don't over do it!
2: Even though the die seems to show the oil in the seam, oil doesn't always do what you think it would. It can travel by seeping and collect a fair distance from where it actually is leaking from. So do NOT rule out the drain plug just yet.
If it IS coming from the area where the two crankcase halves join, there is only one way to fix it "by the book". You know what that is.
While there may be something ( like loctite 638 ) that would creep into that seam and seal, I would never trust it. If tightening the fasteners works, then that would be ok.