YogoBlue......I've got 2 NGK CM-6 plugs on the way, should have them on Mon. I am running 87 octane ( the 97 oct was a typo) and 32:1 Penzoil Air Cooled. I backed the idle screw completely out. Started slowly advancing the throttle by using the trim button (2.4 Ghz Tx). High Low needles are set at 1-1/2 turns out. Ignition battery is fully charged showing 5.3v. Opened the throttle about 1/2 way with choke closed. 2 flip's and it popped. Open the chock and moved the throttle to where the arm is opened about 1/8" beyond the close point. Flipped it twice and it fired but only will run for 1-2 seconds then quits. Then it takes about 6-8 more flips before it repeats everything all over. Each time I advance the throttle in small increments, 1/16" at a time, getting to run for 3-5 seconds but basically the same result. Pulled the plug several times and it's not excessively wet. I did notice a little fuel leaking out around the base of the plug. Wrapped some Teflon tape on the threads and it seemed to stop the minor leak. I did notice that when the plug is out and have the ignition ON and turn the prop I get spark but it's not what I would call a bright blue/white spark. I'm hoping the plug change will do the trick. If not I'll be back.