luke-44,
Also... see the wires that strictlyperson posted... I had a similar condition to yours (under load a higher rpms) when the #40 wire was right next to the wires going to the coil. Installed an isolator jacket on the two coil wires, and the miss at higher rpms under load went away immediately. My wiring is routed exactly as strictlpersonl has shown.
- still curious as to why you are getting
oil on/into the spark plugs though...?