Thanks for all the info...........I installed a Champion RDJ7Y....found it at the auto parts store. Engine would not start ...even after choking and many flips. I also installed a CH ignition system.
I was at the field trying to start the engine and one of the guys came over and we tried another method. He removed the plug and filled the cavity around the plug electrode with gas .....reinstalled the plug flipped twice and the engine popped....open the throttle a little more, next flip and it roared off.
Engine ran very well.....we adjusted the needles a little and the engine ran really well and idled.
We ran the tank dry and after a bit we tried starting it again........well you guessed it we could not get any fuel into the engine by choking or any other method.
Again removing the plug and putting fuel directly on the plug...reinstalling and flipping twice engine started and ran as before.

Anyone have any ideas?

Thanks