I have got a 2017 CAAD12 frame with a BB30a and am using a Wheels MFG conversion BB and the Ultragra R8000 crankset.
I've just spent the whole weekend trying to set up the FD – but in the big ring without trim I can just about shift up to the 4th or 5th largest cog and even with trim I get chain rub in big/big. If I adjust the FD position I get rub in big/small. I've set the FD up about 10 times, reading up to make sure I'm avoiding any mistakes, checked crankset and BB installation, etc. No luck.
I'm starting to think there might be something wrong with the chainline using this BB and crankset and I might have more luck using either a different conversion BB or a different crankset. Any ideas?