how do I get kawasaki ar to run?

Hi,have a kawasaki ar125 1991 10,000 miles.new battery/plug. replaced cdi/voltage reg and coil/ht lead.but wont rev run right.engine revs dont relate to throttle movement,revs hight dies out only runs with choke.have changed carb off a running bike no with no change sat prior for 2 years.no joy with micron removed even,any advice gratefully received.Internal prob maybe?