I switched to the 19cc domes and I was at 180 ish compression. Bike felt horrible slow. Going back to the 17cc and dropping the timing to 6.
The porting is really aggressive, compared to all the other ported cyl I've seen mine are way more ported, I'm going to try to post a pic of the transfers, intake, and exhaust.
The domes are 17cc off the shelf
I live in Miami fl where we are at sea level, and it's never cold lol. The Sunoco where I get my gas, I've talked to the manager and asked him how many times a month do they get 110 and they get it every month.