i need to explain this first. the tub sits at least two inches below the wall on two sides . to fill this gap between the tub and the wall someone used a rubber piece and it is getting nasty. the rubber piece looks like it belongs with the tub. it is shaped correcty and fit perfect. what can i use to replace or fix that area. i have checked with the local plumber and no one has ever heard of a piece like i have descibed. has anyone seen or heard of this piece?