Nice plane Bill, what size engine is that? The carb looks like it should be on a .46!

Boomstriker, my 4 stroke doesn't spew fuel out of the exhaust. It burns pretty efficiently. Now my 2 strokes do, and there is no hope for keeping them clean unless I had a setup similar to yours. The only grime I get on my plane with the 4 stroke is the blow by, but no more thanks to all the input.

Thanks all,
Kevin