I have a problem editing this image:

This is only a small part of the image zoomed in. The request is that the lines be the same width and not that wonky, if possible. These lines are on a separate layer in a .psd, but no vectors unfortunately.
Is there an automatic way to do this? Or at least a shortcut here and there so I don't have to draw the whole thing (it would take days and I'm doing it as a favor)?
What would be great is if there was an AI script or something that recognizes paths and creates them accordnigly, so I can just edit the Stroke width. Any ideas?