I have all the solutions and have got my twelve unparsed clues down to five!
Still missing one 'point' (the second one I think) and three of the misprints.
So how about a hand to clarify 11a, what is this teacher?
And 15a, I don't see what is imbibing the 'homebrew' is it head?
Is 28d a straight clue?
That would really help for now.