Grid lines and shading issues when printing double stack plan sheets with aerials?

I am looking to print plan over plan roadway sheets with aerials on, but even when everything appears okay in ORD, the PDF comes in with the bottom aerial slightly darker along with grid lines showing. Top aerial is fine and prints properly.

I have tried updating sequences of my references, using bing maps as a raster rather than FDOT aerial raster images, and manually referencing the aerial into each drawing model rather than the default. Still getting the same issue each time.

Any help would be appreciated! Thanks.