Infernal and Lightning Skull Aura MTX Effects Overlap Poorly

I would expect the three skull aura effect, when all enabled, should be evenly spaced around the character, but these two mostly overlap and do not look good.

I found this is variably inconsistent, but only seems to be the case when first attaching the MTX. Changing areas seems to fix it.

I would like to see them evenly spaced regardless of how many there are (over just one). With just two, even after changing areas, the second is 120 offset, but would be better as 180. I only have one of each kind, so couldn't test having more than three.

Does having more than three of this kind of aura MTX mean they get offset 360/n? If this is true, I'd be interested in having more of them and seeing more like them.