Re: full throttle?
New engine not broken in: Holding the same throttle setting and/or load on engine will not properly break in your engine. A new engine needs a lot of variability in engine rpm and engine load. WOT and heavy loads and/or high rpm for short periods of time are essential.
Broken in engine: WOT operation wtihout overrevving engine is just fine provided mixture is not too lean. When I lived at high altitude, WOT was I rode most of the time.