Yes. I've been cleaning the filter. And I just put in all new filters.
It doesn't seem to matter if I turn the oxygen up or down. I've set it at max, and even turned it down (on the advice of Corina Tettinger--the Queen). It doesn't make a difference. I've emailed Paul at Extreme Oxy and will probably be sending it in for servicing. The warranty is still good (only had it about 5 months).
Thank you to everyone for advice.
Guess I'm back to working on my hot head until I get my oxycon back from Indiana!
Happy Burning!