QuickDraw GX: LaserWriter GX Tray Selection Issue

I am using QuickDraw GX and the Laserwriter GX driver. I have 500 Sheet Feeder attached to my LaserWriter printer with letter size paper in both the 250 sheet feeder and the 500 sheet feeder. I cannot make the 500 sheet feeder the default tray, or even print using the tray. How can I use the 500 sheet feeder?
Currently if both trays have letter paper in the trays, or have been configured for same type of paper there is no option to choose which tray to take from.

The only way to get the 500 sheet feeder to work or to be the Default tray with QuickDraw GX is to go into the Printing menu and configure the 250 sheet feeder for a paper size other than Letter, or different from the 500 sheet tray. Changing this allows you to use the 500 sheet feeder. However, once you change the paper size, the 250 sheet feeder will not be available.
Published Date: Feb 19, 2012