I have an HT2 and battled the same. I would be OK for a few weeks and the the burn would return. I took it to mean the the ring was travelling, like a shoe heel blisters the foot, the friction of the rub causes the irritation. No amount of lube or ointment will help.
I had a 45 HT2 ring and used that as an idea for my Steelworxx Looker, I went for a 44mm A ring and have not had the slightest irritation. Incidentally, the 45mm of the HT seems like an arbitrary number as there is no circle diameter to measure, presumably it is another measure. There is a lot more room in the HT than the Looker at only 1 mm less..