[Bobcat]

Check your needle and seat on the secondary ... sounds like it might be stuck or the float is hanging up . You didn`t say , but if you have power valves , they sometimes leak and make it almost impossible to get the engine to idle as it runs really rich . What do your plugs say ?
On the primary side , if you turn the carb over , you should have about .020" of the transition slot showing . The mixture screws should be in the 1 3/4 turn out range as a starting point .
I cured the bog in mine by raising the float level slightly ( brings the main circuit in sooner ) and backing the mixture adjust screws out about 1/4 to 1/2 turn from best idle .
The secondaries should just be cracked slightly so you have about .020" of the transition slot showing .
These are starting points and you will have to play from there .