I have a 1999 K12RS that went down under the previous owner and broke the glass part of the headlight. I looked for a used unit without success but found a LT headlight that had broken tabs on it. I took the glass part out of the LT one and put it into the RS housing where it fit perfectly but now it won't go into the fairing!! Can anyone tell me why that might be? It looks exactly like the one that was broken as to size and general shape. Thanks in advance for any insight to this.