I thought I broke it....

I've been torching more lately. Then all of a sudden, it seemed like everything was turning out horribly ugly in color and I started to panic. I cleaned the torch, cleaned and replaced filters in the oxycon, cleaned glass again and again, and still...ugly, ugly beads. Straight into the ugly pot they went. Finally, I realized that I hadn't checked my propane and sure enough, it was almost empty. Seems like the end of the tank is where all the oily stuff they add to give propane that nasty smell settles and really makes
sooty,ugly glass. Full tank and I am back to 'normal'.