People that have Jtags can run trainers, but the only thing that sticks on the save after you turn off the game is the max money thats why theres only max money saves floating around.
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Ah, I see. I didn't think about that. That explains it.
Most of us are using retail Xboxes and have to rely on save editors, which is perfectly fine, of course. I like them.
Also, thanks to kill_seth for the update/news on a save editor. Good to hear! Best of luck.