Kerdi Shower pan - slope issues
I installed a kerdi shower pan, but the existing floor was out of level, sloping away from the off-center drain. I used thinset to build up the side that was pitched incorrectly. The problems began, when in my haste to get kerdi fabric on the wall I was stepping on the freshly set shower pan. It caused the intersection of the two pre-pitched foam pieces to sink. I did not notice until after I had all the kerdi fabric on.
My question is, what is the best way to go about correcting the dip and improper pitch. Can I use deck mud over the kerdi, and then apply another layer of kerdi? Can I try and level it out using thinset, and then apply tile after that. Any help would be much appreciated.