Recently acquired this machine, had to clean the carb and replace the throttle cable. Runs perfect but a couple days ago the oil pressure light came on when it's idling but when I gave it throttle it went off until it comes back down to an idle.figured I out the injection hose into a wrong port on the carb. So I went ahead and premixed gas 60:1 now the light doesn't go off at all. Is this something to be concerned about? A diagram of where the injection house goes would be nice as well.