help/support What is the best way to handle exceptions for games that are handled differently? DIfferent Core, or different emulator?

[umdraco]

I am using the bezel project/megabezles. I love them and dont want to let go but the setup I have the screen is locked horzontally.  For one it locks me out of playing contra and a lot of vertical shooters(TATE games) . I could do a game overide for each game but admitedly the way that retroarch saves in layers has me afraid of messing with any of that stuff and ruin a working build.  Another thing that might be affected by the bezle project is Sinden ligth guns wich dedpend on a white border around the screen. My question is what is the most straightforward way to separate the settings. Shoudl I use a different core or emulator? Is there a way to have the same core have to sets of settings? Could downloading a new instance of retroarch casue any issues and If I do could I assign a LB playlist to that core/emulator/2nd retroarch without doing it individually?