Cyclone V GX using all 6 transceivers in both directions

Has anyone figured out if it is possible to use all the transceivers? I have the same problem using all 6 transceivers. The documentation says that an external PLL can be used for the transmit PLL, so I did that. What they don't tell you anywhere that I could find is that in order for the external PLL to get to the transceivers, they route it through a clock divider. The clock divider is part of a transceiver, so it keeps me from using the transceiver where the clock divider is. A quick look at the Chip Planner shows this.

What makes things worse is that I need to have all the transceivers work at two different rates that are not switchable by the transmit divider. So feeding 2 clocks from external PLLs eliminates using 2 transceivers, leaving only four usable.