I FOUND THE ANSWER! Simply, you delete the modded files, and then through steam, you validate them. i found this fix on the CKAN github link here: https://github.com/KSP-CKAN/CKAN/wiki/Clean-and-reinstall-process. This is how i solved it:
Open the KSP Folder
Delete your folders with mods that you want to set to default.
Open Steam
Right click on KSP
Properties...
Local Files tab
Verify integrity of game files...
This will restore the files to default
