I had no clue what was run in mine. This is what I did. I didn't give a shit what mix the oil was at. I ran up the main to a 340. Mixed at 32:1 then worked my way down. Obviously 340 is was too much. Not knowing what mix or jetting is the thought process behind that. Took it down a main size at a time till I had a 2.5mm brown ring and been beating on it ever since.
Also did a leak down and boiled carbs before anything.