Thanks for the help guys, there's absolutely nothing wrong with the car just the modern fuel. I have a new small 72GPH Carter but I may buy a 110GPH one instead, I don't want to starve the 528 at WOT. It has the Race Carter mechanical on there with a regulator.
My 472 has a stock Hemi Carter mechanical with of course no regulator. I can prime it without too much trouble through the stock vent tubes but the AVS's under the shaker on the 528 are not so easy and I'll rig it out first and see how happy I am with it.

Sheldon