Lego 10214 Tower Bridge - part 10

some more done today, but most of my time was spent hunting for four bits.
They are not small (6x1 white plates) but I have been through every packet of bits and can't find them.
I'll contact Lego and get them to replace the bits.
In the meantime I'll either move on to the end bits of have a rake through my other sets and replace the bits that way.