That’s exactly what I did as well! And it loosened on the first ride... The lock ring is a bit soft so I didn’t go crazy when tightening with the Park. I really want the right tool so as not to damage it.Thanks I actually managed to loosen the ring using a Park Tool green spanner (SPA-1), but I don't think it was tightened to the recommended 35 nm.
If I find something I will let you know