Thanks Gents. Yeah, I have found this gun laid on the Valentine tank quite ridiculous, but I think it shows very well the scale of the challenge designers were faced against.
Meanwhile, I had given some attention to the radiator external surface moulded on the rear deck. Aluminium true metal paint from AK, followed by dark brown panel accent from Tamiya then dirtied more with Engine Grim and finally dusted with Light Dust deposit, both from AK.
It may sound like overkill for an area being barely visible, but IMHO it works nice, especially when just after last step it lost its excessive shine. So now when I dry-fit rear deck engine cover it is visible under a certain angle and light conditions.
See you next time,