I just got a MacBook Air and wanted it to use my Canon ImageClass MF4370dn printer. The printer is on my network with a static IP. I've no problem getting MacBook to find the printer either via Bonjour or TCP/IP, but I can't get it to give the duplexing options that are builtin. My guess is that the drivers I installed from (http://usa.canon.com/cusa/support/c...series/imageclass_mf4370dn#DriversAndSoftware) are not being picked up by the OS and instead its using some generic driver. Any suggestions on how to diagnose and fix?