Simple and fast solution, I'm ashamed I didn't find this myself, but I'm new to retropie and there is so much to learn. There are so many menu's to explore and the first days I managed to render my system useless (more than ones) by changing wrong setting so I ended up starting from scratch. I think this is part of the fun, back in the old days (I got my first vic 20 in 1982) you had to figure things out the hard way too, thank God one can sometimes rely on the internet community for help.
Regards Noel