sounds to me like your jetting is fucked up and there is nothing wrong with your crank seals. The bad part is that no matter how many fucking times I tell you that its not oil and that there is no air leak, you persist on bringing up the fucking oil in the crank case.
Like I said, check the oil level in crank case right now- go ride and burn up one full tank of gas-- check oil in crankcase again. If Oil is significantly lower(empty) then your crank seals are bad. If your crank seals were bad however, you would notice a lot of smoke which you already said you have not seen just a lot of oil out of cylinders which is a sign of rich jeting.