Sounds like you need to adjust them. If you take the side cover off the right side - 6 10mm bolts, you can adjust them.
There is 2 jam nuts and a slot for a screw driver in the middle. Loosen those, turn the screw driver slot until they just start to drag, then tighten the nuts while holding the screw driver in place. They should barely drag.
If that doesn't take care of it, let us know, might be something missing/assembled wrong in the clutches.
I just wanna go fast. If your not first, your last!!
Reproducing the Tecate CDI. Contact me if you need one. I'm most accessible on FaceBook. You can find me on the 1984-1987 Kawasaki Tecate KXT250 Group.