I agree, except for the TR adjusters. I was wondering if moist salt spray combined with repeated temp cycling might be an extra factor multiplied by being near the coast. 12 miles takes that idea off the table. I have a car with black coated headers, which were promoted as being higher temp solutions then the normal silver, in practice they didn't convince me.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
