I have owned a 400 and 808C and would say neither was a
"simple quick" rig.
As others have said, the initial alignment is critical.
DG sell an eccentric aid (nylon/hard plastic) to prevent the first
wing being moved out of position when the second wing is
fitted; this is well worth having; near essential if you are trying
to rig single handed. Any competent machine shop/amateur
could make one to avoid paying DG prices.
You can also buy an eccentric alignment tool (Zulu Glasstek?)
which will pull the two wing together the last few millimetres to
allow the pins to be entered. Again anyone with a lathe could
make one in a few hours from steel round stock.
Without both these aids the 808C was a pain to rig.
The good thing about the 400 is that you have a Rotax engine!