Proper performance requires precise calibration of internal components and the elimination of air leaks. the vintage bike builder Pilot/Air Screw Adjustment: A standard baseline for Mikuni air screws is 1.5 to 1.75 turns out

: Start with the pilot (mixture) screw at 1.5 to 2 turns out from lightly seated.

: Following the manual’s baseline setting , he seated the mixture screw lightly and backed it out exactly 1.75 turns. The First Start

You searched for "Mikuni BS26 carburetor manual verified" to buy parts, didn't you? Beware.

You will never get a perfect idle with pods on a BS26. Suzuki's engineering notes explicitly state the air box volume (5.8 liters) is required for pressure wave stability.

Stuck float, dirty needle seat, or incorrect float height.