[FungiJB]

I bought a whole setup from a nice gentlemen on craiglist. Been melting glass for almost a month now, so I am a complete newby. The guy that I bought my redmax, jen ken, hoses, regulatores, tanks, and tools from threw in some tubes and a box full of color rods. And my god these tubes SUCK. I thought It was just me, and being a newb, and thats why EVERY thing was cracking. I took a steam roller I made, (all clear) kilned it, let it sit out for a cupple hours, then washed it out with water. Right after I finished washing it out, of course, it cracked. The tubes are really old. I dont know if that has any affect, but I really cant make anything with them cracking at one point or another. So I was wondering, What Is a good place to purchase really high quality tubes? Or what brand is really good? I dont know much of anything about glass and,I know this sounds like a such a noob question, but I really do need some help. Thank you so much.