This shows how necessary it is to read read and read more to keep yourself current on any changes that can affect how you do SEO. I've seen some really good guys who've kept their clients moving forward while others fall behind using technics useful years ago.
Sadly you're right in that there are times owners do know more simply because they read and learn - I'm not commenting on your SEO person simply because I don't know why or what they were doing throughout the time. All I'm saying is that just doing basics doesn't work anymore - and ignoring areas you don't know is even worse.
I'd be happy just to go over it and offer some free advice if I can as it seems you're not the typical owner - and maybe help in figuring out a strategy that can happen where if you can maintain it on your own if you're interested in the help. Feel free to contact me.
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