...and here I was feeling proud of myself for using a little alcohol wipe on mine last week. Guess I can at least say I never dunked a whole lens in lighter fluid like it was a fryer basket. But yeah, naphtha or a dry brush is the way, that stuff melts the grease right out and leaves you with a squeaky ring that feels awful. Watched a buddy do the same thing to a Helios and he spent a month trying to regrease it with some random tube from the hardware store. Poor guy never got that smooth click back.

Heard those O2 sensor codes are common after headers, something about the spacing.

My buddy says Factorio feels like his calm little factory routine too.