Bowl Niche Replacement Kit

Q: Hi Folks, I purchased, and had professionally installed, two of your LED Waterbowls. Unfortunately, I later learned that the niches were not installed in accordance to your manual. Most importantly, they did not plumb in a drain line from the niche into the pool itself. Can you help me with some questions, please? 1) I'm having my pool renovated this year, should I have them install the drain line to enter the inside of the pool as shown in the figure in the installation guide? In other words, is it OK have the niche drain directly into the pool through the wall at a point below the bottom of the niche? Is this correct? 2) I will obviously need 2 new niches and the escutcheons / nut that connects the bowl to the water supply pipe within the niche. Where can I order these? I'm struggling to find part numbers and sources where I can buy them. Thanks in advance! Steve