I was able to get a decent set of used plastics that were much better than the ones I had on, Unfortunately, there is a long skinny plastic that is warped. What it the recommended way to fix this? I was thinkink about putting a bunch of cardboard shims under it and then warming it up via a hair dryer.
Here is one method with an oven:
https://pinside.com/pinball/forum/topic/how-to-safely-flatten-warped-playfield-plastic
Here is a video on doing it with a heat gun:
I took the glass out of a picture frame and laid the plastic on it. Heated the plastic with a heat gun until it got soft and started to lay flat on its own and then immediately laid the glass from the pin on top of the softened plastic until it cooled (like 15 mins) and they are as flat as a board now. Make a glass-plastic-glass sandwich. Just be careful with the heat and don’t keep it on one spot too long.
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