Oil slosh

New valve cover gaskets are on the list since theyre getting weepy and illI definitely poke around and take a good look, though looking in the fill hole it doesn't look sludgy at all.
As for vac advance yeah idI do that but I get no vacuum signal at any throttle position out of the Chinese Carter copy...the PO kept the original, maybe it's worth rebuilding, maybe not.
Try blowing air thru the sparkport. If you are sure the port is in the right spot, I would just drill it out, about 1/16 should do it; a little smaller if you got.. If your T-port sync is off, it may seem to take a lot of throttle before that port becomes active. But by 1500rpm,in neutral, Ima thinking it should have a good signal on it, If the timing isn't too far advanced.
I bought some nice reusable blue silicone VC gaskets in 2004. They're still on there. Wait, maybe they were orange, I forget,lol.