Honda CB750 SOHC K7 F2 PD 41A / Carbs Carburettor

  
Honda CB750 SOHC K7 F2 PD 41A / Carbs Carburettor. Have marks and signs of age. Not seized and move as they should only half the choke mech is working all the bits move but not as one. Number one drain screw is stuck will need work. Will need work these are now 45 ish year old now and are not rotten or pitted to death so overall not bad.