I was listening to Jim last weekend, but not really taking notes...
If I remember correctly, you want it slightly lean at idle (saves on the go juice, and it's not like you're loading it at idle).
You then want the fueling map to match the boost, and the ignition map only needs to change if you're getting some det.
I would say that if the leaks have been fixed, the air flow and boost will be different, and you'll need to adjust the map. However, I thought that you could do it yourself with the Power FC rather than throwing money at it.