Carb is stumbling half the time

Engine is put back together and running and driving. I let It idle for a little bit on initial startup let it get up to temp, shut it off and waited for it to cool down. Then I changed the oil and re-torqued the head. First time driving it around, Its sort of stumbling or breaking up when I get closer to 2.7k rpm. Im not racing it, But doing the correct procedure for breaking the rings in. I have the Weber 38/38 and currently I have it 1 1/2 turns out.

Advancing the timing fixed it, time to invest in a timing gun