Genoa halyard the right one among the 3

[Pbrenner]

On our Catalina 350 mkii with a selden mast traditional main sail (non furling) and furling Genoa (no spinnaker) on the top of our mast we have 3 halyards:
1 - 1 coming out of the mast 1/2 foot below the top
2 - 1 coming from top of mast in front of forestay
3 - 1 coming from top of mast behind the forestay

And we know our setup from factory has 2 Genoa halyards and 1 spinnaker halyard

Assuming that halyard 2 would logically be for the spinnaker

Now it seems logical that halyard 3 to be the main Genoa halyard as well Positioned but reading seem to indicate that the halyard 1 is the one for our furling Genoa

Any setting / idea / theory ? On your Catalina 350?