lettering and numbers on knobs becoming unreadable

Pulled off the old knobs, pushed on the new ones. Easy. Make sure that you get the knobs that fit the kind of knob shafts on your stove (D-shaped or rectangular), and that the letters/numbers are oriented correctly on the knobs (some are meant to be read from above, some from below; you'll know what I mean when you start comparing the pictures of parts on the site with your originals).

Very good service from PartSelect. Even though part of my order was back-ordered, they let me know right away, and shipped the delayed parts in about a week.