I stumbled upon a quick and easy tip for cleaning your iron. I guess being around a lot of older people taught me a thing or two, but I found out that vinegar is good for removing scorches and starch build-up from irons.
While the iron is cool; simply pour a small amount of vinegar onto a soft cloth until damp and rub until scorches or build-up is gone. If this doesn't work, heat the iron for a approx. 1 minute or until warm, not hot, and repeat the treatment.