need to center nav point for rotation

I am creating a wireframe tunnel in swish. its coming along nicely. except i want to make the line in the tunnel to rotate to make a twisting effect. My problem is the center nav point is off by a smidge and makes it look like a tire with a bubble in it. How do I center the little center thing?

Thanks

Hi, Im trying to imagine what you have there but will use another example

Square A is and has to be off center by a certain number of pixels

Solution Make a transparent square that is wider / higer whatever and centered perfectly.

Merge Square A and the centered Tansparent Square.

So you end up spinning a the square that you cant see that has A square simply as a part of it

Hope that makes sense!!! :)

Jofta

yes it does and thank you. Although before I got a reply I just redid the entire thing and made it correctly symmetrical.

I'm going crazy now though. this is extremely hard in swish. Are they're 3d programs out there that will do this?

Thanks