Thanks for reporting these.
There was a problem with the dialogue system, which for some reason gave you all notice board quests. I fixed that.
I tried that specific fence repair quest and there were no problems with it. I got the quest, got 5 wood and nails, raised my crafting skill to 10 and fixed the fence. Then I went to Billy, selected the fence repair topic and got my reward. Granted, I tested this once I fixed the previous bug, so that might have something to do with it.
Campfires are, for now, infinite. There are not that many ways to restore stamina otherwise. You can use the energy powder, but that requires quite a bit of science training. Food gives some stamina too, but not much and can be used only a few times per day. I will try and do something about rather soon, since more and more mechanics depend on stamina.
As for your post regarding the cure quest, I made a mistake when I was converting it months ago. I fixed it and now it should work properly.
As for the bloodstone, there are two different bloodstones. They give you different powers, so they are not the same. One is in the spider mine and the other one is deep in the caves. I described the correct path to take in one of the previous posts. You can give both of these to Zacharias and you will get powers from both of them.
I will upload new version in the next 24 hours. Thanks again for reporting these bugs.