RE: OS 120 AX, 3D?
Absolutely the same way I,m going. After owning several 4 strokes,went back to using a larger than called for 2 strokes,they 3-D just fine,cheaper fuels,engine and repair costs(I replace parts in my 2 strokes).And the newer, lighter OS 120(near same weight as the older 1.08)should be perfect.