I now have two combustion chambers smoothed out and 4 more to go. I keep going back to chambers ive been working on to do more final touches as i pick up new techniques and gain confidence. This is definitely an artform and this is why the experts get paid the big bucks for port / polish head work. I'm 5 hours into this and I've already learned more than I did when I first started, and that's after hours and hours of reading about other DIY'ers does and donts and watching techniques on youtube (aussie heads, jafromobile, headbytes porting <-- this guy knows his ****).
In case anyone wants to do the same and is wondering what I'm using for this job...
-Harbor Freight Variable Speed Rotary Tool <-- for all 1/8" shank bits and accessories
-Dremel Flex Shaft <-- amazing and a must have
-Huskey Air Die Grinder I've had for many years <-- used for all 1/4" shank bits