When the drops on the garage floor go from brown to black, that's how you know it's time to change the oil.
It's hot out there, man. Real hot. Humid too. 7 men lost their lives taking these pictures.
I think there is some slop in the mounting holes of the cover. I really want to loosen the bolts and see if I can line it back up with the mounting boss but the timing cover doesn't leak so it goes against my better judgement.
In hindsight I didn't need to remove the valve cover to install the header and replace the studs. Dumb.