HERES SOMETHING U CAN TRY . BUT FOLLOW CAREFULLY I DID THIS ON MY WHOLE CAR .GET SOME CRC BRAKE CLEANER . SPRAY IT IN A SMOOTH CLOTH TOWEL ,UNTIL JUST DAMP . RUB THE CRACKED AREA GENTLY AT FIRST AND SEE IF IT BLENDS AWAY THE CRACKS . IF IT WIKRKS WITH NO ILL AFFECTS RE-DAMPEN TOWEL AND CONTINUE...