 adjusters, whatever they call those. And while I had the valve covers off, the lobes are good. Everything's functioning. I did a little primitive bleed down last weekend. Put air in the cellar, took it to the top bed center. Don't hear a thing. No head yet. I don't think there's a head gasket issue. It's quiet on two and four. Coils, packs, spark plugs, injectors. I give up. It is