1975 Kawasaki KE100 bogging/revving problem

[nruzicka2006]

ok so here is the deal-- with everyones help on the idle problem it had i fixed it, now more problems. ok to start off, it starts fine if i put the choke on, but if i leave the choke on any amount of time after it starts it just revs up really high (is that normal for 2 strokes when using a choke?) so once it starts i push the choke off and it idles fine, but when i go to rev it it just dies down but if it does rev up the rev hangs there for a second and then comes down to the idle and vice versa if i rev it it takes a second for it to kick in and then it revs and hangs for a second and then comes back down. i put the air screw 1.5 turns out like the manual said and it seems to be idling fine so any suggestions would help

thanks,
Nick

[Sev]

Take it apart and clean the jets again