I have had a Mini for a year now and have beenhaving problems with it burning my glass and reducing and the knobs getting really really hot. I took it in to Glasscraft and it ran just fine on their 10 LPM concentrator so I think that with 2 concentrators or tanked oxy it would do much better. As it was I bought a minor and have had no problems with running it on my nat gas and 5 LPM concentrator but I still want to add a 2nd in the near future.
Edited to say: After reading Shawnette's post I have to add that it could be a problem with my concentrator, I have not figured out how to test it without buying a new one, lol
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