One piece I forgot to finish was one battery box and the detail pieces. A pretty quick job to do and I thought I would document it for the benefit of other builders.
Here's the battery box (and Momma Cat) as it is now.
Here are the pieces we need to silicone on....the round, knurled hose fittings and the detail tabs.
I spread clear silcone on each fitting, put the fitting into place and squeezed it in place.