Question on my DL, I have noticed that on extended vertical downlines, if I pull level quickly while @ idle, the rpms will drop for a split second and then pick back up almost sounding like the motor will die but it hasn't yet. Is this normal or a tuning issue. I have only 1.5gal. through the motor and it has the in fuse vent mod done. It is slightly rich running at the moment.

Thanks.