Hank

I see the heat riser (crossover) port too, and a valve guide boss that appears to be the size of my thumb.

I figured slimming the guide boss some and blending it into a relatively smooth turn to the roof of the port should help, especially in the ports without the crossover. \:\)

If you haven't got that far, no bigee. ;\)

My, what a steep learning curve. Erik II#5155