Well gee...at least the first line in my first post was right!

Anyway...when I run that first (just one mind you ) tank through excessively rich, it's mainly for the connecting rod...and being so rich, it sure doesn't take long to go thru that tank...like maybe a couple - three minutes? (don't mind me...I'm just trying to CMA )

Edit: I have a 6 oz. tank on my engine test stand, and a large engine will obviously go through it quickly. If I'm running a .25 for example, I won't even run a whole tank through it...I will run it long enough to get a baseline, and set the carb for a decent idle and transition.