Don't stop! This mod is good the mu files need there own part file
In ksp,game data were the squad file is make a file call it whatever you want in that make some more files call them the same name as the parts you want to make in them a mu file called model and a cfg file and a texture the layout should look like this
Ksp
Game data
Your file
Part's files ie cool part,lol tank
In cool Part's file
Model.mu cool part.cfg cool part tex.dss
In lol tanks file
Model.mu lol.cfg lol texture.dss
And that's the way to get that mod working you have to put a read me in the mod. If you put more than one mu and cfg in a file it will not work you can have more than one texture in a part file good luck as I have experience with this as I have made a mod with multiple parts in it.