I have a louver with 7 blades, pattern starts from the bottom up...this view from the top down better shows the discrepancy however.
You can see, it seems like every other blade is hatched in a different direction...ideally the 2nd one down is what I'd like to see...but even blades 1 and 3...while differing from 2 and 4, don't seem to share the same odd angle?
See attached.
The blades are an .ipt patterned in a .iam.