FYI- you deleted the "]" on the end of my post. You can go back to YOUR post, hit the "edit" button, and repair that ...so the 'quote' will show up properly!

Ive given you EVERYTHING you need to take the next step...

"search" will lead you to DIY info on how to get at the control knob. Instead of asking, and hoping someone will regurgitate this for you, 5 minutes of searching and reading will yield FAR more than one or two replies in this thread!