Would first make sure there are no #44 bulbs in the head. #47's burn cooler. From a sealing standpoint, it's a personal decision. I typically don't unless I see something making me believe it is starting to lift.
I owned this machine sometime ago, my only add is that any animated backglass, has the risk of the animation causing damage and sealing does protect it.
There are probably backglass experts on this site that have more experienced advice.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/should-i-seal-a-backglass-on-a-gottlieb and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.