Using two Mux Shield II's with Mega


I'm trying to see if I can complete a project for this weekend using a Mega with two Mux Shields from Mayhew Labs.

It is my (limited) understanding that two Mux Shields cannot be stacked, as it creates conflicts with certain pins and it what I'm encountering. A single Mux with the Mega works fine, but I need to the additional I/O's of the second shield.

I would have ordered the Go Between Board if I had known of it earlier, as it would allow reassigning of pins. But, alas...

Would I be able to not stack the shields and use jumpers to connect all the boards (and hopefully avoid conflicts)? If yes, guidance would be appreciated.

Thank you,