The 400 uses a diferent logic to the "Classic" it only uses flap lever position, so after landing when the flap lever is moved towards UP the trailing edge obviously begins to retract but as soon as the flap lever is placed or passes F1 the outboard LE flap begins to retract...."
Are you sure, SMOC? According to my 744 Engineering training notes, the Group B LE flaps (outboard) begin to move when the TE flaps (not the flap lever) are less than 4&1/2 units (and the flap lever is moved to 1 unit).
".... and as soon as the flap lever is placed in the UP position the midspan and IB Krugers begin to retract, this is why the LE on a 400 looks like it retracts as one unit on the ground after landing"
According to my notes, the Group A (Inboard and Midspan) don't begin moving until the TE flaps are UP.
This applies to normal retraction.
Unfortunately, I won't be back at work for several weeks to verify this.
Regards.
Q.