Mirror Modifier + Fish Fins

Okay, so I gave up on trying to use the x-axis mirror to get to where I wanted and used the mirror modifier. However, the fins that I had made along the center edges are now doubled because of the modifier. Can someone tell me how to make it so I only have one fin along the edges?
I attached a screen cap of the problem in case it’s hard to figure out what the heck I’m trying to say.


You can increase the merge limit on the mirror modifier. Please note though that having no thickness on the fins can cause problems with the normals.

Thanks for the tip :slight_smile:
I’ll take care of that ASAP!