Recently in May, I got a sweet Triple Honeycomb as a rig along with a domeless TI nail and was using it a lot without cleaning it, but eventually of course cleaning had to be done, I used 70% Isophyrol and some salt, and shook it up very much, everything ended up getting clean except this brown burn kind of ring, you can't wipe anything off the stain with the Isophyrol, would they still let me ship my bong? I mean it is just a burn stain after all they wouldn't try testing the glass would they? And I am shopping Washington to Michigan btw.