I recently just picked up a 06 evo with 31k miles. The only aftermarket parts on the car is the intake and the exhaust.

Anyway, recently I was just cruising around at about 40-45mph in 3rd gear, and I go to down shift into second; however, a real awful noise occurs and I can feel some movement on the clutch pedal. Im thinking maybe I need to just change the fluids, or could it be something else? Please any help is welcome, and this problem only happens at about 3-4k rpms down shifting into 2nd gear.