I know this is probably a simple question, but I have to run my crippled boat about 2-3 miles so I can put it on my trailer for engine repair (oil injector issues). Do I connect an external tank of gas/oil mix line at the motor fuel fitting or do I cut the line coming from the internal tank and splice with a piece of copper tubing? The connection at the motor seems large compared to the external line I have. Suggestions? Thank...