Ian,

Did you have to do any other mods to your HH, like the pull-up resistors for under playfield transistors and the fuse/capacitor mods for slings etc as well?

(I'm about to embark on these myself).

Mate the pull up resistors were already there, done at the factory by the looks of it.

still got the fuse/caps to do, i got some inline fuse holders for the job.(some caps were done but will replace them)

I have a pop bumper board for the up kicker on the lower PF to hook up as well.

I have upgraded all the pop bumper boards 2 of them for the main PF and 1 for the attic PF and 1 for the cellar PF

Ian