I too do as you do... change them every year... it gives me piece of mind that they won't give me any trouble later in the year.
Mine as well, don't show that much. Usually just a little black but not enought to be considered major carbon build up...
Great thread too! :dthumb:
Mine as well, don't show that much. Usually just a little black but not enought to be considered major carbon build up...
Great thread too! :dthumb: