Help Roaming

[the3rd]

I have a Sprint Touch Pro and a Diamond on Verizon and have an issue. They work fine except I have unlimited roaming on the account however when I try roaming only mode or go outside Verizon's network it drops and won't connect to any network but Verizon's. I'm using MightyRom on both with the newest Verizon Modified PRL to get rid of the roaming triangle and the Telus 1.04 radio. Any help would be greatly appreciated!