yeah it was cold. When I tighten the lock nut i use box wrench so I can hold a screwdriver on the adjuster to keep it from turning. And yeah i checked it them all when I was done. should I aim for the bottom or the middle of the spec? the way i was doing it was loosening the screw(they were all tight) until i could get the feeler gauge for the bottom of the spec in, and then as long as i couldn't fit the gauge for top of the spec in, I knew it was in spec.