Does anyone have a similar fix for the duplex function? I have the HL-2270DW and the regular printing feed is fine, but if I try to print duplex the printer begins to suck the sheet back in, but then can't suck it in more than halfway. At that point it gives up, spits out the paper with only one side printed, and declares "duplex jam." Then I need to open and close the back cover and press "go"--at which point it attempts the duplex print again, fails again, etc. I have to unplug the printer to reset. Any ideas why the printer can't quite grab that page back in? Thank you!!