buster, You had consuption issues with your Toyota and you are currently haveing consuption issues with your Honda. I think that it might make a difference! Truthfuly my opion is no better then your in this case as I have not tracked consuption to customer break in procedure at all. I do know that I have not had consuption issues with any of my vechiles though. I think that if your current consuption does not level off as normal breakin consuption then you might want to try working a different prespective on the next car! What does it hurt to keep an open mind? The material, methods,surface finish's,oils and design of engines has changed so much in the last 15 years let alone the last 40 that it is very possable that old school break in may not be the best way to break in and engine now.
So to recap I am only sugesting that everyone keep an open mind and actualy read the motuneusa site break in recomendations fully.
Another way to look at it is too look at how poorly most old grandma car run. I am sure some of use have bought cars that were 7-15 years old with 20,000 miles or less on them. They tend to burn oil, have sludge, stuck rings, carbon deposits etc.....Why? Becasue they were not driven hard enough or long enough. Usualy once you soak the pistons, flush and change the fluids and drive the snot out of them they start to recover! What some think of as easy is not always easy on the engine at all.
Their are Yenko's with 15,000 miles on the clock all done 1/4 at a time that start and run like new with great compression!