Hi, We just bought a brand new house 8 months ago, and already, our fiberglass shower floor has had two air voids, and one crack. The manufacturer tells us it can just continue to be “repaired”, which it has already been, twice, and the repair is starting to come up. We are thinking there is a defect in either the shower itself, or there was a problem in the installation. Can anyone give me any references or information to check up on this? The manufacturer is being very sneaky when it comes to fulfilling the warrenty. Thank you!