We recently finished our pool and there were a few errors along the way, pool builder still working on them. The one that is posing me t biggest problem is the spa was supposed the have an air,rest all the way around the inside, this would have the added effect of separating ones back from the coping which sticks out. Our seat depth is 20 inch and am 6’1. When using the spa the coping nails me right at shoulder blade height. Any thoughts on how to resolve?