You got a very good point. It makes sense totally. I just changed the oil on my bike @ 600 miles, I put in the Castrol 10-40W Actevo Part synthetic 4T engine oil, picture below:I disagree. If the engine were completely broken in at 600 miles there wouldn't be any further restrictions on engine operation, but there still are per the manual. One reason the oil gets changed at 600 miles is to remove any swarf and shavings. The filter won't remove swarf finer than a certain size.
When I get to 1,000 miles I'll change the oil again and I'll put the fully synthetic Castrol Power 1 below:
Before this I will not accelerate my bike more than constant 6K rpm.