I’m on my second "original" Lyra Etna on my TW Acustic Raven Anniversary on a Triplanar arm. It is a beautiful sounding cartridge.
You don’t say anything about how it sounds better to you so it’s hard to know how to help. There could be several set-up, cartridge loading, or system reasons why it sounds best to you at that VTF. I'm also not sure how you're measuring. A few hundreths of a gram either way will not damage the stylus, but I would try to stay within the higher end of the range. I’d be surprised if you couldn’t get great sound in the recommended VTF range.
First, make sure you have the right tools! Then, I’d find a good setup guide and go back and recheck and fine tune all the adjustments in the proper order, stylus overhang, azimuth, skating force, and VTA as these things are all interactive and changing one changes the other. I’d do them once more all over again as a final check. (Yes, you have messed with VTA/SRA if you’ve adjusted the tone arm to be parallel with the record and that changes the VTF on your arm!).
Good luck!