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I am building a 4m (1:3.5 scale) Luňák and have got to the point of fitting a tow release for aero-towing. My question is how critical is the position of the tow release? I am fitting a standard Multiplex aero-tow coupling. The instructions say "Drill and file out a 10mm hole in the extreme nose of the fuselage, taking care to make it exactly central", however the build instructions I have for the model say to install it down 30degrees on the centre line - I don't understand how to measure this, but there are plenty of pics on the web showing full size Luňáks and show the tow release below centre. Just wondering - should I be carefully measuring this somehow at 30degrees? or will an approximation do - what are the potential issues of getting this wrong if any? Does it even matter at all?