If it were my engine, I would either put the two heavyest in the 3,4 med in 2,5 and light in1,6. This IMHO would reduce twist on the crankshaft. From a balance standpoint it would give light,med,heavy,light,med,heavy. Another way to consider 1,2 light,3,6 med,4,5 heavy. This would give light,heavy, med,med,light heavy. Probably the second way would be the smoothest. A tough call to make. Jay 6155
