Do they tighten - or loosen?

RustyRatRod said
Exactly. I don't know "what's got into" the cats that insist that adjusting running and hot is the only way. They're crazy. I don't give a DAMN what "the book" says. lol

That reminds me, I need to run the valves on my 273. It has been a couple years. Probably only 5,000 miles though.