I messed with the adapter plates a little more
Using a 3/8" round over bit in my router, I opened up the ovals of the plate to better align with the velocity stacks
Huge mess but they turned out decent
Down the velocity stack
Once that chore was done, I assembled them for the last time with some RTV between the plate and the bottom of the rain hat. Then installed them on the car.
I still need to re-sync all the ITBs since I adjusted the linkage, then i'll install the top hat nuts. For now it's loose to protect the intakes.