Below you see two objects, each 7-pointed stars with different settings. One, as you can see, has been rotated. But where one light grey "element" meets the other, it should be exactly at the outer spikes of the darker star. Why isn't it, or rather: how can I get the spikes to exactly meet the inner points of the grey star?
In the second pic you can see the misalignment even better.
TIA,
Helmar