I heard somewhere a few years ago that Honda overcame their oil starvation problems, from tilting the machine, by redesigning the sump. I think I heard they put in a double sump. Not positive.
Having once used one, they certainly perform as capably as a two stroke counterpart, with a much quieter idle noise. Quite a novelty

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!