I don't make my own compost, over here there are plenty of shops you can pick up from, and its relatively cheap if your using it on a small scale like myself.
The compost I use is a mixture of peat and organic material (whatever that might be), with some added grit. No chicken manure as far as I'm aware.
Regarding "super" high nitrogen levels, I doubt it. I had 3 plants with pale yellow leafs, responded well to a high nitrogen fertalizer.
About the high PH of some of my pots, well it would appear the layer of sphagnum moss is doing it's thing. The pot that had the PH of 8 on Sunday morning now has a PH of just under 7 - Tuesday evening. Similar readings are happening with the blueberries.
And on a happy note.. I finally have barrackapore pods starting to grow :-)