One of the Mini-Mancha doelings I purchased three weeks ago (Rapunzel is approx 4 months old) seems to be growing a horn back, and possibly both. They are just starting to appear above the hair and are no more than 1/4 - 3/8 inch above the skull. Should I disbud again, over the top of the scurs? If I need to disbud again, do all disbudding irons work the same or are there some I should avoid? Thanks for your help!