Finished project.
Unfortunately I got way behind on any updates. Progress was consistent.
The largest issue I occurred was with the mini playfield and the 5 button targets. It seems the opto and IR boards associated with these targets are prone to problems. Ended up replacing all 5 IR leds and 1 opto receiver. Even after this I was getting intermittent failures on one of the targets. Took me a while but eventually found a wire with a break in it. Plastic sheath over the break was un-marked.
Ramps polished back to life using Novus 3,2,1.
Flippers completely rebuilt with new bats. All mechanisms overhauled and parts/sleeves replaced.
All new bumper kits and caps, and new rubbers and led's throughout.
Speaker upgrade, with Lpad and low frequency crossover for the sub. BIG improvement!
Brackets, bolts,coin door and legs resprayed with the same automotive enamel black paint as I used on the cabinet.

Pretty happy with the results, and game play (touch wood) is without fault.

Thanks to everyone who followed my progress.