Agreed on the disassembly idea. Maybe if it is Nuzi, they're being hidden somewhere inside the fire fountains? Alternatively, I wonder, if she did buy other things, what they might be used to make if combined with the motorcycle parts.

I suppose we should use another line of questioning to see if there were any other strange customers besides Nuzi. Nuzi might still be involved - if it was a long case maybe Nuzi was meant to be a distraction from the real thief?