FT8 on QO-100 with SmartSDR on MAC

in the previous post I described my station configuration, so I won't go into detail here.

I have a problem with using FT8 on QO-100 on my Flex 6600.
I use two slices for Full Duplex operation. And it works perfect for SSB. This is my current setup.
Slice A is TX, set to XVTB, through a set of transverters and PA to the Dish.
Slice B is RX, set to RX_A, through a downconverter to the LNB.
I use the Sync Slice A with Slice B option with the apropriate offset (aprox. 8Ghz), so that both slices are synced and work together.
I can use this setup to have a full duplex solution and it works great.

However, I can’t do FT8. If I try to use this setup, I have either Slice A or Slice B assigned to the correct DAX channel. so I can either receive FT8 on slice B or transmit FT8 on Slice A, but not both. I don’t need Full Duplex for FT8, but I can’t see another way of achieving this.
Solution 1: would be IF i could work split in the SAME Slice, with the 8Ghz offset between TX & RX
Solution 2: would be IF i could send both slices to DAX 1 (Slice A for TX on DAX 1, Slice B for RX on DAX 1)
Solution 3: would be IF i could assign different DAX chanels in the FT8 app, for TX and RX, so that I could have Slice A to DAX 1, Slice B to DAX 2 and in the FT8 app set RX to DAX 2 and TX to DAX 1.

None of these solutions work as of now, and I can’t think of a different way of doing it.

I've sent this info to Marcus, and I'm waiting for his input.
If you have any ideeas, I'm opened to suggestions.