Can somebody tell me what this is?
#1
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Noticed it this weekend when I pulled the AOS off. Its right next to the lower opening for the AOS. Didn't find anything in PET or the manuals. Its not threaded, but it almost looks like there should be a plug in there???
#2
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That is how it is suppose to be. I remember hearing someone in a past post had an explanation as to why that was there, but i can't remember what it was, and I am guessing it won't be easy to find in a search.