Thanks vid1900 for another helpful topic, also wanted to mention the CPR guide and care that is posted on the Classic Playfield Reproduction website as pretty much what vid and cliff mentioned in their posts:
"Proper long-term care after the playfield is installed will be the key to keeping it shiny and beautiful. We made these to stand the test of time. You shouldn't need to go crazy with waxing and several cleaning/polishing products to keep the playfield nice. Avoid going overboard.
We recommend a simple Novus 2 process. If you ever find your playfield getting "dull", wipe on Novus 2 with a cloth and allow to dry/haze.
Then take a clean cotton cloth (like an old t-shirt) and buff the haze away. Keep rotating the cloth and using a clean face as often as possible.
This will polish it nice and shiny, keeping the sheen of the clearcoat, and protecting all the open (ball-active) & visible areas of the playfield.
Waxing should never be required. That is a personal taste of the owner, though. Besides, you won't be waxing under the plastics and non-ball areas unless you want to perform a playfield strip every time you want to wax. But...some people just love to wax.
We recommend staying away from WildCat, as it has been proven to eat away polyeurethane topcoats slowly over time.
As mentioned in Part 6, keep your balls fresh. Your best defense. Change to taste, after every 500 to 1000 games."