OK WH, once again just get it under control. No sense loosing it when you've come so far.

I have seen this many times in my plants, but I must admit not that bad. Any of my older stems are usually hollow like that. If you prick me do I not bleed? Same with a plant, usually. The reason I bleed is because my blood pressure is higher inside me than the air pressure is outside me. Same with a plant. There actually is pressure in the plant pushing the moisture and nutrients wherever it needs to go, and if you cut a limb off, it is normal for at least a little stuff to ooze out. It's just that in your case, it happens to be a lot. I've never seen them actually drip before. Maybe your plants are just so healthy that the stuff has too pour out, whereas mine are not as healthy so the stuff just kinda forms an ooze at the cut. Your plant does look very healthy for a plant at harvest time. Usually you see at least some yellowing leaves.

I have never done a thing to the ends of mine that do that, and everything works out fine. Most people say that you should cover the hole so that any diseases don't spread to the inside of the plant. Well, I my plants don't have diseases, so I don't worry about it, and the hole eventually kind of scabs over. I noticed Rhizome said that those parts of the plant will die off down to the next node. Obviously he has seen this happen, so I guess you should expect it. Mine have always healed though.

I have my doubts that blackish stuff is a fungus. It's been awhile since I revegged a plant, so I can't really remember if mine had that or not. However it kind of seems like they had something that was at least similar to that. Long story short I would not scrape it off or cut it off. It is trying to heal IMO, and just like one of your wounds, it will heal faster if you don't keep taking the scab off. Instead, if you're worried about a fungus, I would spray an antifungal on it.

Please remember that I have read very little on the subject. I have just done it. I am going solely by my own experiences, so I could be wrong about something. Please read the 24 page disclaimer of mine, then sign in triplicate. I refuse to take responsibility for ooziness.

A page or two back you said that you got some tips from Rhizome. If you don't mind, please share any that I have not covered. I'm always willing to learn the right way of doing things, and he usually has some good tips.