Hello, i have a 1986 BJ70, and every second day or so the clutch will randomly get stiff (almost to the point where you cant push the pedal in) and the brake light will come on at the same time. It still engages and disengages fine, it is just hard to push, then it will randomly go away. I cant seem to find any pattern with my driving causing this. Does anyone have any idea what could cause this and is it an issue i should be dealing with? Thanks in advance!