I'm replacing non-locking door handles with the ones that lock. I got old handles off easily but I can't figure out how to get the screwless faceplate (rosette)off. There are 2 itsy bitsy holes/slots alongside edge of plate. I tried pressing down inside these with a paperclip and also a tiny jewellers screwdriver but didn't feel anything 'give' or 'release'. I'm at the point of taking a flat tip screwdriver and trying to pry it off . Help!!