Hello! first of all thank you for this tool! is amazing!!!
I do have a question please: I downloaded the Dreamcast version yesterday and I've played a lot with the Horizontal and Vertical Size and position, but I find weird that the upper and lower border red lines are not present in this version. (if I make the Vertical smaller I can see just a portion of the red upper line (for the right half only) and just a portion of the red bottom line (for the left right only) so is kinda weird.
Also on another note I found those little curvy lines at the upper corners so I'd like some advice to try to fix them please!
Hello! Great you are finding it useful.
Something weird mut be hapening in your setup, since the lines in the grid are there.
The curvy lines could be that capacitors need replacement or that you need to work on the settings, but each TV is different.
My advice would be not to obsess over small details, since geometry on CRTs is always imperfect.
Cheers!