The Givi tank lock ring fits almost perfectly on the R3. The Triumphs use BF02 and the only fly in the ointment is the bolt configuration.
The Explorer was three long bolts and one short. The R3 has two of each. Oops. Luckily I had a spurious other bolt with the same thread.
Unfortunately, the "only used once" tank bag is too big and fouls the clocks! So what to do.
Buy another and sell this one. Done. At least I nearly broke even on the deal.
Once that was completed I had to fit Baloo.
There aren't many options of where he can go. So.
Fettling 2 over.