The thinner QR rail plate is only recommended for QR with lever lock. It is not recommended with Arca Swiss style clamp with scew knob. the knob will bump into end of NN rail. We will develop new clamp that will match the NN rail in 2 months. Next month will will have QR system compatible with Manfrotto plate and gitzo plate. It will be an excellent low cost solution for non-Arca Swiss system.