The TRP is too tall, yes, now you mention it. It needs to be just tall enough to look over the gunner’s periscope. The part you have looks to be from a 1A5, which had a taller housing for the gunner’s sight.
Also, something I just noticed (and was probably aware of twenty years ago 
): there should be a round plate in the turret roof behind the gunner’s hatch opening, for a close-defence weapon that was never fitted. You would see it poking out from under the open hatch on your model — see this drawing that I found here:
In 1:35, the plate is about 9 mm in diameter with a 1.5 mm edge around it, according to the drawings in The Leopard 1 Trilogy.