There is a short video on how to replace them for my printer (AnyCubic Photon). There are a lot of screws, but in the end everything turned out to be very simple and took no more than 5 minutes. Clean everything first and make sure you have a soda or water bottle cap. When reinstalling, place it under the plastic to create tension on the first set of screws. Remove it when you reconnect it to the VAT and it holds on nicely. Use a razor or X-Acto knife around the inside edge to lightly trim away any excess and you're done. I checked the print almost immediately after there was a problem, I just zeroed the printer as it was a little off and voila, perfect prints again!
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