I am going to redo my bathroom. My tub has several cracks in the floor, it is the ABS Plastic kind. I reallyt dont want to pull it out and replace it unless I have to. Is there anything that can be used to reglaze and seal the tub ir will it have to be pulled out and replaced? If so is there a guide online anywhere to doing this? It is just a standard tub, Home was manufactured in 1988. Thanks!