hello...great info Larry/Twisted 6 thanks for sharing...hope all is well...
i enjoyed reading your Post, again thanks....

1 thing came to mind as you shared your experience-not trying to butt heads with you-I am tired of that-hope we can work together at this point, sooo as I said let me share this.....
for best flowing port, i have found grinding/cutting out ALL of cast valve guide is best-just DONT cut off bronze valve guide-when bronze valve guide is pressed in , this will support valve and open up port.....this is a -yes here i go again- PES special technique....

as I have read many of these Posts over and over , i find the best 1 to be the 1 that wonders what it would be like if you and I could work together- I am ready...i hope we can move ahead..........