Rick. You crazy.
My 65 metrakit, which I know is a whole diffeent ballgame from you...but I knew it was broken in because it went from 190psi compression to 210psi. And in the length of 9 miles went from tuned well to so rich I barely made it home on a fouled plug.
You'll know. Or at least with my kit I knew. I assume they're all similar.