BTW, OP, I thought about this some more, and one story I can relate: I put together an old truck engine once when young and could not afford a rebore and new pistons. The piston to bore clearance was all over the place and some bores clearances were big (like .005" and more for cast pistons which is big). The rings seated 'OK' (as good as you would expect), and it did not burn excess oil amounts, less than a qt in 1000 miles. So this may not be the full oil burning issue in your case.
If you pull the oil filler off the engine and idle it, and you put your hand over the opening, do you feel a lot of air puffing out of the valve cover hole? Just trying to figure up a quick few tests to see if the rings are sealed.
Does the oil smoke come out under all engine operating conditions?
Can you find someone local who can help you with troubleshooting?