Hello! I have 8 Nortel Minor torches in my bead store's studio and have grown weary of the troubles I have with my over-worked compressor. I was advised that connecting each of my torches to a refurbished medical oxygen concentrator would be a great way to go, and much cheaper for maintenance. I am told there used to be someone on the ISGB site who restored and sold them. Is that person still in the ISGB & doing that? If not, do any of you know of a reliable source for this? Have any of you had experience with doing this?