I'm having an odd problem in my Cougar. When I'm driving around, I notice whenever I'm say, shifting from first to second, I get up to speed in first, push down the clutch and shift to second, depress and gas there is an EXTREMELY hard jerk due to the rpms dropping lower than they should. Like, if i press it in, don't shift and just watch the gauge, they drop way low then back up to where it should've stopped so I can make a smooth shift. When the AC is on...its 10x worse. Anyone know what I'm trying to describe? 99 with 92k miles on it.