I have a VistaFlame VF55 (same insides as the enviro M55). It's been up and running for over 2 weeks now. Sometimes after many hours on heat setting 2, the flame seems to die down a bit and barely reaches over the burn pot. 1 thing I found that seems to fix this is to raise the heat setting up 1 level for about 10 minutes. After I lower it back down, I have a nice strong flame with intense heat.
I hope this may help others with this same issue.....
I hope this may help others with this same issue.....