LEAK!!

Black spooge is very commonplace, unless there is an air leak there all should be well and not affect jetting.

It would be a good idea to get some suitable material to make a gasket as cardboard wont last too long and could create an air leak.
 
do i have an exhaust leak? its leaking oil out of the exhaust pipe where it goes over the flange. im currently using cardboard temporarily for a flange gasket. theres no smoke coming from there

No F'n way! Most times when oil or gas comes out of an exhaust connection that means it's leaking!