Ahhh, I just know you're gonna love pulling it all apart and getting it back together and then end up with an extra screw from God alone knows where and have to pull it all apart again to find out where it goes only to end up with two extra screws when it goes back together again.

I had to strip the PF playfield right down and much further than what I wanted to just at this stage.  I reckon WH2O was easier than this bugger of a thing.  Good luck with it.

P.S.  There may just be a reason that wooden frame was not replaced.