[KimBeads123]

I have been making beads using a dual torch with oxygen and propane tanks. I just switched up to an oxygen concentrator a few days ago and am having a lot of problems with my glass. As I am still somewhat new to torch work and have not had an issue with my torch before I am sort of sucky a trouble shooting. My colors are all wonky - the blues and greens are very dark no matter how light of a rod I start with and which seems to be the same whether it is transparent or solids. Whites and beiges seem ok but do tend to have some brown streaks so I am guessing my flame is too hot??? Also my good reds come out looking silver most of the time now. I am setting my cones like I always have for a neutral flame but my glass is not behaving as it used to. I am not sure what is happening. Thoughts???