RocketcarX
95% of my weight is fuel
You do not want anti seize anywhere near the tip of the plug, so if you must coat the smooth part of the plug I would stop applying it 1/4" from the ground strap.Barely off topic, but
http://www.aa1car.com/library/ford_tsb_08-7-6.pdf
Per the Ford TSB, OP did it correctly, no? Or am I missing something? Perhaps a bit too much but I don't see too big of an issue. It's been a few years since I did mine but I recall following the Ford TSB and have had no issues since.
I feel it's likely tune related and your tuner should work with you to resolve, or at least verbally assist with troubleshooting. Hopefully you're able to get a log and get some answers.
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