This is just Gutz's personal experience. It won't apply to everyone or every board. But I think the insight from my little experience may help everyone.
Problem:
I have a PLU board that I modded and generally am quite happy with.
What I hated about my board was that the stock PLU layout has changed the right windows key into an anti windows key, and the apps key got changed into a trigger key for PLU's function layer which I don't use.
Intention:
I wanted to mod the keys back to a stock function as painlessly and unintrusively as possible. When I say unintrusive, it means I don't want to do anything irreversible such as cutting traces and scraping solder mask.
I posted on this forum but can't find my original post. Suicidal orange was nice enough to note that there are jumpers.
![Modding keyboard layouts with minimum pain 107026-0](https://geekhack.org/index.php?PHPSESSID=khvmojd7ukc8pbv31ng44p2c44o647hl&action=dlattach;topic=74063.0;attach=107027;image)
As you can see from my pix, jumpers 12 are shorted for both pads on both keys. That's a total of four jumper pads.
I removed all the solder using solder wick. I found the solder sucker poor for this task, since these pads are not through hole.
![Modding keyboard layouts with minimum pain 107028-1](https://geekhack.org/index.php?PHPSESSID=khvmojd7ukc8pbv31ng44p2c44o647hl&action=dlattach;topic=74063.0;attach=107029;image)
Then I tried shorting jumpers 23 instead, on the suspicion that this PCB was manufactured with alternative layouts in mind.
![Modding keyboard layouts with minimum pain 107030-2](https://geekhack.org/index.php?PHPSESSID=khvmojd7ukc8pbv31ng44p2c44o647hl&action=dlattach;topic=74063.0;attach=107031;image)
My guess proved correct, and now I have my happily-stock layout modded PLU keyboard!
At various times in my experience I have come across non standard layout keyboards. Next time you are burdened with such a board, why not check to see if there are jumpers that you can short on the PCB?
Special thanks to suicidal_orange. I did use flux cleaner and cleaned up my PCB after taking the photo.