After seeing a Leopard up close I realized just how shallow the rear exhaust grills are on all the kits I have and ordered the welded Leopard Club resin replacements for the C2 (available here; Leopard club welded exhausts) and the cast ones for the Meng 1A5.
If you do buy these then you need to chop the rear deck before you glue the top and bottom hull parts together. For the Takom kit measure 2mm from the engine grill panel lines and draw a line, then measure 40mm from the top of the side hull, mark it then draw a vertical line down from that. Using a razor saw and feeling brave you then cut out the area that I've shown in the photo;
I chamfered the edges of the kit parts, cleaned them up and the fit of the resin replacements was almost perfect, all they will require is some filling to blend them in afterwards. I must say they look a hell of a lot better;