Well, I tried both ways. It definitely would not work drawing fuel from the bottom existing tank...fuel just gushed out of the carb, hydrostatic locking the engine and all. I reversed it to draw fuel from the new top tank that's on the wing CG and it appeared to work like a champ, other than richening up a bit during flight. At least I didn't have to trim it during flight, with it being mounted centerline CG. I'll lean it a click or two and see how it goes. Thanks to all for the replies. This has been a learning experience, but not entirely too frustrating. I appreciate it.

Brian