No option to print from tray 2 (11X17) on my Brother MFC-J6920DW
No option to print from second tray.
iMac (27-inch Late 2009), OS X Mavericks (10.9.1)
That model is not shown as supported on http://support.apple.com/kb/HT3669. Did you ask Brother is this is supported? You could try using the J6910DW driver.