Carsten,
Not sure if you are aware of this, but Futaba released this item some time ago - S-Bus to normal PMW outputs.
http://www2.ripmax.net/Item.aspx?Ite...Search=p-sbd-2
In the case of the MPDX-2's - I am currently playing with 2 of these withe 7018SB receiver on my 18MZ - gives me a fully adjustable 32 channels radio !
modtron
Oxford UK