In remodeling our bathroom we have found ourselves looking at replacing a tract porcelin on steel tub with an acrylic whirlpool tub. However in talking to some friends they have mentioned that the acrylic tub may need to be set in mortar (which our previous tub was not). This has led to several questions:1). How big a job is it to set a tub in mortar?2). Will this make it very difficult to remove the tub sometime in the future?3). Do you know of any good articles or books which can describe this installation procedure, or is it simple enough that you could describe it?The answers to these questions would be greatly appreciated (as well as any other advice on installing a tub like this.Mike Davis