Hi a bit off topic but wondering if you can help me out. I saw you installed a Pentair 18W UV. I have read the instructions and installed just about everything, however the instructions say (in multiple spots with underline and red and !!!) there should be a 4" spacer between the bulb connection and the next nut on the top, which we do not have. The instructions say this MUST BE INSTALLED in multiple spots yet when I called their (pentair) customer service they seem to indicate that it was optional. I also just spoke with BRS and they sent me a letter talking about a change to the setup but it is for a totally different piece. So anyways I’m looking for someone smarter than me to know if this is accurate or if they just did not want to deal with it? Did you have this piece on your install? Thanks!!!