I figured out that I was melting headlight bulbs because I am an idiot and wired the switch so both hi and low filaments were always on.
Drained my oil
Inspected sump filter (intact, yay!)
Realized I neglected to order a new sump gasket
Traced an oil leak to cam tensioner
Now I don't know if I can remove the cam tensioner assembly from a complete running motor to inspect the gasket without anything falling inside or other complications. Help?