Holy cow, you got a 60 series up to 6.5 mpg? That's wild, I've never heard of one getting that good (most guys I know are happy to see five). A haze at idle after all that work is a real bummer though. I'd double-check the injector seating and the torque on the lines before touching the timing, honestly. Sometimes a tiny air leak or a weep can cause that.

So you only leave a small balance on one card, not both? I've always paid both to zero. Did your friend say if it matters which card you do it on, like the older one or the one with a higher limit? I'm trying to figure out if I should try this with my main card or my backup one.

Vague instructions are a plague.

What did you do after you realized it was fake? I saw a fake clip of a friend saying something awful and just called them directly to check. Hearing their real voice was the only thing that fixed it for me.

Tell me you replaced those broken shutoff valves too. That old compression fitting style is a time bomb. Bet you never want to see another wrench under that sink.