Dan - I've not seen your Cobalt modified for Heineken pots up close, so keep that in mind. I wonder if it would be possible to affix your pot stand to the inner wall with jb weld or rivets or some more ingenious way to get rid of some weight.
Or, maybe you've already done this or tried it, cutting chunks out of the stand where it's inside the stove - holes or rectangles, or whatever - just to remove more material to drop the weight a bit.
That said, I don't know what it weighs, and not knowing what you use for the stand I have no clue how much weight that would drop. Would it even be worth it?