Carb selection help, please ?

I like the AVS myself.

Muddy feeling down low. Not bog. But when you hit the gas, it has a sluggish response. Not snappy. Smaller carbs have higher velocity and this helps atomize the fuel for a better burn. Large carbs on small motors are best suited for HI RPM.

According to the old Carter tech line, they told me 630 cfm for the small Carter AVS. Dons right about the rebuild kits. Cheap. Cleaning the carb is the battle. Blow it out with air after soaking.