Save your setups as STC_Something and you should be able to find it easily, or delete the original version if you don´t need it. But a would say deleting it is not necesary.
The problem is not finding the setups, it is that they are saved into a folder that is not accessable from within the game. For example, if I load my setup "v1", make some changes to it and save it as "v2", this new setup "v2" will not be placed in the "STC_Portimao" folder but in the "Portimao" folder. But from within the game it is not possible to access the "Portimao" folder, so I will not be able to load this "v2" setup and make further changes to it. What I have to do, then, is Alt-TAB out of the game, move the "v2" setup from the "Portimao" folder to the "STC_Portimao" folder, then go back into the game and load the setup. Then I save it as "v3", and again it is placed in the wrong folder and I have to do this Alt-TAB routine all over again...
I'm not sure deleting the original Algarve/Portimao track actually fixes this problem, but I will try it. I have already tried to delete the "Portimao" setup-folder, but it didn't work - it is created again as soon as I start the STC Portimao track.
The reason for this bug is that the track-name is wrong in the .gdb file. You have called the track folder "STC_Portimao", so the game looks for setups in the "STC_Portimao" setup-folder, but in the .gdb you have called the track just "Portimao", so when you save a setup it is placed in the "Portimao" setup-folder...
I heard some rumors that you wanted to patch the mod to fix this bug but then decided not to do it, why?