Had not flown my Hanger 9  P51  -- 150 size, with a Saito 180.  Could not get it to start, and then one fellow said ... "turn the plane upside down".  So we took my heavy duty plywood and 2 x 4 plane craddle, and then put the plane on upside down, with the engine now right side up, and then "boom" the engine started right up.  We then turned the plane over and I took er to the skys.

Thanks for helping.