I'd rather build than buy...
The 30 cal Browning that comes with the Stuart isn't too bad, the ammo box on the other hand...
I cut the belt form the kit's ammo box and added it to a Tamiya .30 box, then a bit of bracing and I came up with something I could live with.
Turret hatch stops.
It has been said the engine hatch hinges are way too big. The hatch hinges are also oversize but are much closer to what is on the real tanks. The engine hatch (battery cover) is tight fitting on my tank and it has some pretty good magnets to keep it in place. I removed the hinges and built some non working but closer to scale hinges for the engine deck.
Finally the left side view and I bobbed the leading edge of the fenders.

"Don't believe everything you see on the internet" - George S. Patton
Eric