Hi a/c man, I have not heard of a 1500 frame cracking, they were made of steel. The 1800 frame is made of aluminum and has several recalls for cracks in the frame. Mine is not part of the recall group serial number so I have no personal experience. My Honda dealer has checked it without finding any evidence of cracks. Google GL1800 recall and you should be able to find the list. From what I have heard, Honda has held up their end of responsibility, although I have heard of cases where they did not. Are you looking at a used 1800?