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I'm a newbee to new bikes too. I'm still breaking mine in.
However, in my reading I came across those who say not to move to a synthetic oil during break-in because it is too slippery and will lead to the cylinder wall glazing instead of allowing the micro-grooves to wear down to have nice flat tops (or sides rather).
Hopefully, I have not resurrected a long standing debate.
Also mentioned was that occasionally taking the rev's over 5k (for short duration) is actually good for cylinder smoothing (break-in) as long as you don't bog it down and overly heat the engine.
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