Hi Rich
It's looking good. You might like to try What A Job on the hull - liquid Polymer - I'ved used it on my M41's, M26 & Centurion - fills the gaps, add textures & protection - Environmentally Friendly Water Based Protective Coatings, Paints, Sealers - Industrial, Marine, Roofing ,Construction, Residential and Automotive Industry - I use the Industrial, Smooth, Black sample.
As a Shermanaholic were you aware of this - Armorama :: Circumcised Sherman -

Mal