I have a RT-Mod helmet and armor and I had no issues with passing EIB with the RT-Mod lid. The ears had the correct number of bumps. Only thing I changed was the lenses for the green instead of the smoke that it comes with since I was building a ANH stunt. Not sure if you have to change those if your going for ESB as the CRL looks like flat smoke or green will work for both 501st and EIB.