As part of the maintenance process that involved the fixing of the oil leak and the addition of an air-oil separator, we fitted the modified carburetor venturi built for me by Ed Spracher from Kenai, AK.
I have not completed any rigorous flight testing. However, initial testing shows that the engine now runs much smoother. The leaning capability is not affected - the uneven fuel distribution still prevents leaning past peak EGT on any cylinder.
More updates as I proceed through flight testing.