This helped me a bunch: https://github.com/CupNoodles27/DRG-Tips-and-Tricks
And doesn’t have ads, or want to track your location.
There’s a guy that makes replacement LCDs for these: https://www.tindie.com/products/halfbakedmaker/lcd-replacement-for-trs-80-pc-3-sharp-pc-125x/
No love for the 727?