Steve,
In step 7 where you state to remove the baffle, are you referring to the radiator shroud or am I missing something on my radiator?
My fan shroud totally encloses the fan except for maybe 1/2 inch of the engine side of the fan. I did just recently scrub the oil residue off of both sides of my fan blades. Took 2 rolls of paper towels, 2 spray bottles of grease cleaner, and about 3 hours of my time. I have verified air flow through all areas of my radiator, but really can you ever have to much airflow? I will say that the outer areas of the radiator have more airflow, but I suspect the fan blades are moving more air there.