I know a bit of the theory behind wheel repairs although I am an absolute novice welder, just bought myself a razorweld ac/do . I have some wheels to repair myself when my welding gets good enough.. When wheels are cast the rim creates a kind of tension, you have to recreate this as best as possible...

So after a year how is your progress?
I'm about to start down the same path with a unimig razorweld 200 ac/dc