How To Fix Wrong CS:GO Clan Tag

Close Steam and All Steam Games.

Find your localconfig file.

Usually Under ( steam\userdata\"A Bunch Of Fuckin Numbers"\config )

Open it With Some Script Editing Program.

eg. Notepad ++, Visual Studio etc.

Find Your Old Clan Tag In That File.

Change your Old Clan Tag to Your New Clan Tag.

Remember to keep the quotation marks.

Spam ctrl-s to ensure maximum save-abliity.

Profit.