Mods in sig. Temp here was around 70 deg. elevation is 500 ft. I'm running a CEL 017-017 needle, 50 Pilot, 160 Main, airscrew 1 1/2 turns out. I did a WOT plug check in 3rd with the 160 main. Checked the plug, the very end of the "bridge" by the center electrode was light grey, and got browner as you got to the base. I changed to a 170, wouldn't even hit powerband. 165 barely hits powerband but bogs. Obviously it's pretty close to being perfect, but I'm thinking I may change to a CGL 017-016 needle for the WOT use. Any thoughts?