after having a closer look at my HH there will be a lot of work,
with the bottom playfield being removed they have done everything to stop the ball going
to the bottom playfield, cut wires to the trap door, and blocked the cellar hole with some sort of bog.
coils and brackets missing from under the lower PF, at least the lower PF came with the machine.
im sure it will all work out in the end!!! 
cheers Ian
It WILL work Ian !
Just needs some TLC - you should see mine - a real project game - but with HEAPS of potential ! I can't wait to restore it - and I have already received a repro backglass.