Dissapointing year end with my Roush 427R

[SwiftDB4]

I've had oil burning issues on my 427SR, but not as bad as some of the posters. The MSD ignition cap had broken the center electrode off and I didn't find this until the engine had 3000 miles on it. I assume fuel wash may have affected ring seal, but I do get compression readings of 170-185psi. Since changing the MSD cap and going to a QF carb with leaner idle and main jets, oil on the spark plug threads is virtually gone. The engine now has about 10,000 miles and burns 1qt./1200 miles. Otherwise it performs well. Is the oil consumption to be expected for these Roush stroker engines?