Do those carbs have the external impulse line.
I was just looking and it does not appear that they have an external impulse connection but use a internal.
I didnt look into that.
Guess we need to know what saw he is fiddling with.
Think I will quit looking for info till I know what saw.
2800 thru 3300 that series
Then these
49 Venturi 12.7mm
164 Venturi 16.66mm
137 Venturi 16.61mm
77 Venturi 15.80mm
2800 -365 use small carb small intake OEM . Big easily put in place of both.