93 b2200 still smokes

So my 93 b2200 I've been working on I replaced the head gasket and valve seals it runs great now. But it still smokes . It has about 50k miles on a bottom end rebuild. It didn't smoke before the head gasket job. It stops smoking some after idle but there's still a faint blue smoke while driving. Could it be the valve guides the heads got about 220k miles on it what could it be?

98.9% of the time when one of these motors smokes when it is cold is the rings. The oil rings get stuck, and don't contact the cylinder walls when cold, once engine gets to temp, they expand with the pistons, and start sorta working.

I had an 88 that was smoking like a forest fire when cold, and it was rebuild about 100K miles ago, was the rings stuck, but whoever rebuilt it lined up all the ring gaps i a row .

Black smoke is usually oil. Blue smoke is unburned fuel. Seems like you have gone after obvious stuff, but maybe your carburetor isn't mixing the fuel well. What kind of gas mileage are you getting. Maybe your choke isn't opening up all the way. Do you have he factory carb? Maybe it is time to replace the O2 sensor.

That's backwards, blue smoke is oil, black is fuel, white is water/condensation/coolant.