First the nautilus never had subΩ coils, those are for the AtlantisV1/2I guess I left out some relevant information, Nautilus has discontinued the .5 ohm coils, i'm 99% sure about this as i've been told that by vendors directly (I called because the .5 coils were out of stock, and thats what they said, appeared it was like that across the board, but i could be wrong) I am using .3 ohm coils.
Second, why would they discontinue .5Ω coils when they are among the most popular heads people are using
Third, find a new vendor, they obviously have no clue what they're talking about