So i bought the JD Jet Kit for my 07 S and took it to a shop for install. I come to find out that they installed the 160 4th clip with 3 turns out. They also installed the hot weather needle (i don't know what the difference is between the cold and hot). I live in Northern CA so i am at sea level with temperatures not reaching above 80 degrees on a good day and i don't have any engine mods other than the 3x3. was the mechanic smoking crack when he did the install? I've got a good pickup at low rpm's, but there is some serious stutter and lack of power in the highs. my buddy's stock 07 s pulls mine no problem. what do i need to do? any help would be great.