|knob missing and mismatched knob|
Last weekend while looking for something else at Home Depot, I asked about knobs and a very helpful gentleman told me that I should try their Parts & Accessories department and handed me a business card with toll-free phone number. This is the phone number for Canada, I don't know if it will work in the US.
Now all I had to do was take a picture of my current knob situation and then put one of the new knobs on the empty spot and replace the mismatched one with one of the new knobs and take another picture.
Now my dryer looks like new and works like new.