Restart the rebuild

Ok onto exhaust bowl/chamber side.
Took some measurements as I havent been into those just yet. So stock measurements for what my measuring is worth lol
Right below valve seat
1. 1.3815
3. " "
5. " "
7. 1.3715
Narrowest part of throat
1. 1.2290
3. 1.2560
5. 1.2250
7. 1.2340
Take a look at ridge inside bowl!
#5 doesn't have one due to heat crossover?
#1,3,7 are brutal. I know to leave shape alone, but that's some decent grinding to smooth it all out. And that's my goal was to simply smooth it all.
Ideas? Pics of ported exhaust?
Thanks
Steve

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