When I compare the MFX to the original I see this
And when I look at this picture, I can't agree with statements that
The ridges on the MFX look a bit different from the prop they referenced because the MFX was machined in mass on cnc machines versus being hand turned, filed, and sanded. But that doesn't mean they screwed up.
And I think that saying

And when I look at this picture, I can't agree with statements that
MFX got their ridges wrong.
the ridges are wrong at the end of the main crackle body
The ridges on the MFX look a bit different from the prop they referenced because the MFX was machined in mass on cnc machines versus being hand turned, filed, and sanded. But that doesn't mean they screwed up.
And I think that saying
Isn't an altogether unfair assessment.If you have an MFX compair the rides against the one ion this photo and you will notice they are slightly cleaner but shaped and spaced correctly (they are just grooves with the edges rounded).