[TR] Gas tank filler cap orientation

[Angelo Graham]

Hello List:
Thanks to the list members who answered my previous question on rad cap 
pressure. Am in the final stages of reassembly of my longstanding TR2 
project, so all sorts of questions arising.
Just wondering about the orientation of the gas filler cap. Is there any 
"right way" to orient the filler cap? Open to left, right or back? Just 
personal preference?
Thanks for all your patience and help with these things.
Angelo Graham