Custom post seo and meta boxes (Thesis)

Hi there,

I have a problem concerning a small bit of php that I am using to add the default seo and meta boxes in Thesis to my custom posts. This is it:

[Code moderated as per the Forum Rules. Please use the pastebin]

This works fine for my custom post named graphics but I have three other custom posts which I need to add these to. If I repeat the code and try to apply it separately I get a repeat error. Can anyone help with this? I believe an array may be used in some way but my knowledge of php is not sufficient to solve this.

Thank you