I am sure that Ross has resolved his Swanstone installation, but to save any other unfortunate DIYers who may make the same mistake that he previously made and that I also made, here's what to do. First, Swanstone says that you are to make a 1/2" bed of mortar. I bet Ross, as I did, went to the hardware store and found a bag of Sakrete mortar-stucco mix. This was the only type of mortar I could find at Home Depot. It turns out that this is not the right material for setting a shower pan. Type S-mortar stucco mix has no strength and is made for skimming on walls. It sets really fast and has hardly any strength. I called both Sakrete and Quikrete and what needs to be used is something called "Sandmix". How would any DIYer know what this is. It is cement with sand. It has thousands of pounds of strength per sq. inch and is what you use. The term "mortar" is actually a rather generic term. Once I removed the mortar-stucco disaster from my concrete slab (actually not hard because it become dust), I mixed, on Sakrete's recommendation, half water-half Sakrete bonder additive to my Sandmix. It takes 6 hours to set up so you don't have to work fast. Since I was placing my pan on a concrete slab, I first wetted the slab, and then brushed on the bonding additive per Sakrete's recommendation. This sealed the floor. After letting that sit, I mixed up my Sandmix with the water-bonding solution and got it to the recommended 1/2". I put the pan in place, and then stood on the pan to set the pan. It is now rock solid and will never move. The only small mistake I made, but which did not at all affect the outcome, was I made the cement smooth. An architect friend told me later that it is best to use the teeth on you spreader so that the cement is ridged. This allows the cement to move around better. I hope this saves the next person from any problems.