Four Sons of Horus Options

Has anyone here used the four sons of Horus (Egyptian funerary deities) in ritual to represent the cardinal points? I am a bit amazed as to how many different correspondences to directions or elements can determined.

In the classical Egyptian we have the following:

Ahephi = North

Ameshet = South

Tmoumathph = East

Kabehsnuf = West

Not counting the golden dawn attributions (which seem to me inaccurate due to incorrect assignment of organs) , I have come across several other methods during my research.

I find the most success when using the historical system in my practice. I am curious as to the experiences of others using these deities. If you use another system of correspondences what was the basis of your choice to do so?

i've never yet found a definite set of attributions of color and direction that seem right, and it also seems to change with time and location on the earth, especialy hemisphere and even season

i've tried asking the entity involved but its always the 'its your mountain not mine' answer