I think you don't adjust it at the carb but at the oil pump. But, hey, somebody might have mixed oil in the gas so make sure you've got nothing in the gas tank but gas before messing with oil injection.
I think I heard that you're supposed to look for two scribed lines to line up on the pump when throttle is wide open. But I don't have one so wait for somebody who knows for sure to reply. Or find the service manual. I believe there's one for viewing or downloading on this forum in the general section.
Yeah, good luck and keep us posted.