No problem - I'm glad you noticed it

As the micro-tube struts are already fitted and match the recesses in the wing, I didn't want to start from scratch.
Also, because of the struts, I can't really cut and insert an extension.
So I'm trying with stepping the top and bottom surfaces and adding 0.5 mm thick plastic card.
The bottom of the floats first have a packing piece of plastic card to help create the shallow curve on that surface.
Once that's done I should be able to fill the sides then final sand it all to shape.
We'll see
Mike