This is probably going to sound ridiculously simple but it does highlight how 'sleeping on it' can help a huge deal.
I recently got a pretty nice WH20, and I had a few small things I did to it before I give it a good clean and pull it apart over the winter. I wanted to get a spare color DMD I had in so I could at least enjoy it, well I got the DMD in and had a few games and wanted to adjust the dots settings but try as I might the translite just would not raise high enough to lift out and over the top of the speaker panel as per usual. It just kept on catching on something. I even took the lock out and no dice. After about 30 minutes of futile attempts to get it out I gave up.
Next day I literally walk up to the game, give it a bit of a wiggle and get it out practically straight away! I must have been tired or something.
Also noticed the original DMD had no grounding braid attached to it so that was a nice bonus