I think there is a tooling problem, or maybe it's me? The photograph above is the Sherman I'm trying to represent with my Tamiya M4A3 kit #35250. If you notice the tank has one fender missing. Be that as it may all the pictures, I've seen of the 9th Armored Division Sherman's in the Battle of the Bulge had these fenders and dust-shields installed. However, when the 9th Armored Division arrives in Germany in 1945 the fenders and dust-shields are removed in most of the pictures. I mention this fact for reference only.
Above is the fenders and dust-shields Stik gave me from another kit. They are the right length and seem to fit until you look straight on at the upper hull with the fender in place. When the inside of the fender is straight with the transmission housing the curve of the two fenders leave a large gap as shown below.
So I purchased a Tamiya M4A3 kit #35190 which had fenders and dust-shields and encountered the same problem as shown below. According to Scalemate's web site these two Tamiya kits came from the same tooling.
If I didn't mind the fender turning into the transmission housing then I think the Tamiya fenders from kit #35190 might work on kit #35250, but I do mine and they may interfere with the tracks. Please see photograph below. I realized it may be hard to see how much the fender turns into the transmission housing in this photograph, so I measured it and the offset is a 1/16".
Next, I compared the fit of fenders and dust-shields that came with Tamiya kit #35190 and they appear to my eyes to be the way you would expect them too. So, I believe Tamiya may have made a sight change in their tooling for kit #35250 which according to Scalemate was released later and did not have fenders and dust-shields in the kit.