Apparently rotaries are supposed to run silky smooth, and I've recently seen some vids which did reflect that.... Well not in my case. It's quite rough.

I'm guessing it's the plugs and because the oil needs to be changed perhaps...

What happens is when idling, you hear it sort of hiccup, and just after the hiccup, out the exhaust comes a spatter of black liquid. Smells like fuel and oil, is a bit greasy, and not warm or hot. This was just after starting it, water temp was around 122F

Problem at the moment is I cant find a spanner to fit the plugs. The plugs are huge and nothing fits between them and the rotor housing, god knows how they got them in there.

Just wondering if my analysis seems correct?

Ignitors are fine, cables are new.

Cheers