The current fan is an 18" flex fan.
The timing is 10 or 12 degrees BTDC at idle, I'll have to double check that to be sure but I believe this is accurate.
I'm feel like it's lean at idle but don't have an 02 sensor (yet). However, with my 825 Mighty Demon it feels a little rich yet still have this same symptom. I've pulled plugs and unless I'm reading them wrong, they confirm this is correct too.
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