361 Woes

I dont mean to bring this thread back to life, but I have one more question. I have changed the oil out and am running a little marvel mystery oil too. No chance to drive yet, just parked and holding the throttle open to about 2,500 rpm for 20 minutes at a time. No change, still smoking. The weird thing is that the smoke, even with clean oil has a slight fuel smell too. I still have a heard time thinking that the ring just fell apart or moved itself overnight and a valve seal shouldnt smoke like that all the time, even if completely shot. The other aspect is that at different rpms, the revs vary a little and the engine surges, not a consistant miss, plus I hear a little pop now and then through the crappy glasspacks. the real issue besides the miss that is throwing me offf is the smoke. Then I thought about it.

Could it be that the intake gasket is shot somewhere, or do they usually not fall apart like that? The weird misfiring has me wondering. Any other ideas? It was running good the night before it started doing it with no smoke.