Gotta 02 wr426 and decided to install ex. only Hotcams and started it up and noticed my pipes glowing red(GYT-R TI.) so I shut it off and cooled it , ran it again sounded fine just started glowing again when you gas it . My valves on ex. were loose with new cam so I set it on looser edge of tolerance (next puck was too tight ) . I checked and double checked cams for correct timing got them as close to perfect as I could . Im afraid I goofed somewhere . Any input would be greatly appreciated . Just dont remember pipe glowing like that before although it was dark out when I kicked it over .