Yes it's tight! Be sure to move from tab to tab as you hit it. It will unscrew in a hurky jerky fashion with the hammer and screw driver method. The tool shown above will rotate it out like a socket. Nicer for sure but hardly necessary. The tank is way tougher than what a screw driver could ever hope to do. These are crash rated and very tough.

I was going to get that tool but found it was not needed considering how many tank rings I need to remove in my lifetime!
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lol.... a recent viral video comes to mind but decorum needs to be maintained.

 

Hopefully this is one and done for me. I already have my fingers crossed hoping that the part from FCP Euro is the correct one and with the correct specs. They did cross check it with the VIN of my car. It was a third of what it would have cost to get it from the dealer.