Jeez, not sure I should say anything here anymore or get banned but I've been running engine dyno test for going on 27 years, thousands of break-ins, literally, I've lost count, maybe > 10,000 of them, all kinds of engines. Modern engines using modern materials and oils and ring design do not, I repeat, do not rely on ring "seating" by wearing in. Rings simply seat by their design, geometry and cylinder pressure. They do not need nor do you want metal to metal contact, ever. Oils can not be too slippery. Syn oils do not have any issues with ring seating or engine break-in. Ring/cylinder wear and life or durability is another issue altogether. Yes engine use, rpm, load and oil quality matter there. Every engine I've ever seen that had an oil consumption issue on a new build, ours or factory had a problem:
1) Wasn't built right, ring installed upside down, ring broken, 2nd ring installed in top groove, forgot the oil ring expander etc..
2) Bad valve guides, bad turbo seals, oil leak, too much oil in crankcase, crankcase ventilation system screwed up, etc...
3) Bad or poorly ring design, clearances, geometry, etc...
I just haven't seen any break-in effects, periods, needs. It's either right and oil consumption is good or something is screwed up and no matter how you "break it in" it won't matter. We measure oil consumption on all of our test beds, real time, continously while the engine is running, no need to shutdown, check dip stick, sight glass, whatever, it's either good or bad. If not good, we stop and inspect and find the problem.
I read the CBR smokes on decel, valve guide problem maybe ? Also read here aftermarket rings fixed bikes with problems. There are rings, twist rings, that are designed for the
2nd groove, sometimes even the top, that help seal under light load/ high vacuum conditions. It wouldn't surprise me at all if a different ring supplier/design cured the problem.
"The rings are not seated properly when the bike arrives from the factory son! ANY MAKE OF BIKE!!! That's why there's a break-in period for 300miles"
Total BS IMHO, sorry, but if OEM's delivered to me, work or personal, engines like this I would send them back and/or buy from somebody else.
Your statements, JJ's, & Diel's are spot-on.
Frighteningly, they are the exact polar opposite of the SM at the local Honda dealer.