You're very transparent and I appreciate that, but I believe this takes a deeper analysis of the page. I seriously question what your Referral Traffic, Direct Navigation, and Search Traffic numbers looks like in detail - This may give us a better clue, as would a number of other deeper analytics as opposed to these surface numbers. If you would like to be a bit more candid about these numbers via message, I think I could help you uncover the issue. I look forward to hearing from you!
@Neighborhood SEO