Idling: I have set to 850-900 RPMs but some reason after i drive the car and i come to a stop back to idle, it'll go to about 500-550 or it might go to 1,100-1,200 and not drop to where its supposed 2 be set. whats goin on here??

Clutch: Recently happened, seems like its happening when its really hot outside. ive got a stage 2 ACT clutch and sometimes the pedal will stay close to the floor after letting it out. Almost seems like pedal is getting sticky.

this is on a S13 SR