Suzuki Gs550 GS550E 1977 Carbs Carburetors Mikuni Side Carbs. Came from a Canadian import, showing only 4226 kms. The throttle slides are free, the choke is free but the tick over screw is stuck. Will need complete overhaul, I have taken only one float bowl off and this has varnished inside, see photos. No damage but as mentioned will need complete overhaul. Any questions please ask.