Be very wary of extended runs at wide open with a 2stroke.we take our quads out to the power lines, and that is wide open.
WOT throttle causes the supply of oil which is pooled into the crankcase from separation, to diminish at an alarming rate.
If you up intend to do long periods at WOT, consider adding more oil to the premix, or use an oil with a greater film strength to combat lubrication starvation.
Changing oil ratios require jet changes, so be wary.