1. The new grenade screen frame is a kit that I picked up from Hammer Six (thanks buddy). It is a styrene frame and screen. The frame is very delicate and needs tender loving care, but it went together well and was really not as hard to put together as I thought it might be. The shape was different that the original screen and it actually didn't fit the turret without a little bit of modification. The turret had to be raised about a quarter inch on the front panels. This one modification did so much for the vehicle it wasn't funny.
2. The stowage boxes were incorrectly shaped - I am referring to the odd shaped one that rests on the rear fender and the one that hangs underneath the main box.
The old pieces had to first be cut away and then new pieces constructed out of styrene, the resulting modification greatly improving the overall look.
3. There was a piece of styrene glued to the upper deck of the hull to raise the deck over the driver's compartment. The piece did not fit the hull correctly and to me it was very obvious it did not fit correctly (you can sort of see what I am talking about in the photo above). I carefully pried it up from the deck and reshaped it with a razor saw and the dremel tool. It was then glued back down.
As the photo below shows, the stowage boxes eventually got hinge and fastener details, all made from brass, wire and styrene.