Yeah, thats the thing i thought it was @ first. The shop that did my engine swap also did the slave cyl @ the same time so that bled the system...on 2 seperate occations. One of which the mechanic said he ran 8 pints of fluid thru the system to get all the air out. I know thats extreme but thats what he said. I thought it was funny how pedal feel would vary with temp and drive time. i'll probably tackle this on the weekend.