Doesn't that kit come with a slip on little header flange already? Like it bolts in. then you spring mount some shit on there and stop cracking pipes.
I think on the stock jugs you just break the little header flange loose. those are always little floppy doops.
also, how do you like the "Ph'nglui mglw'nafh Cthulhu R'lyeh" from IKEA? I got the
"Ingvar kraken grundtal norvikken" workbench with lingonberry jam and it's definitely helped me navigate the hyperborean planes