[joetapley]

If I understand you comment correctly then the fletching angles are conventionally correct. The angle between the two fletchings facing the bow is made larger than the other two angles to increase clearance between flletchings and riser. This approach originated with wooden bows and with modern bows it probably doesn't make much difference between iso and equi arrangement.

Of course with the iso arrangement the nock has to be lined up with the correct two fletchings or clearance will suffer. That was the point of the "####" feather being a different colour the angle between the "hen?" feathers is larger.