DDJ 400 Mapping

Hi,

Few questions on the DDJ 400 if anyone has an answer??

1. Can you map [delete] and [memory] cue/loop buttons (accessed via shift) to choose between FX 1, 2 and 3? I'm finding the FX select keys quite clunky to use, so ideally looking to keep the 3 main ones I use in place and select between them. I can see you can map to browse the FX with different buttons, but presumably the default level/depth nob will still only control FX 1? I'd rather cycle between 3 and use that nob for whichever is selected. 

2. If that's not possible, can you select which FX are available in the FX dropdown to reduce the list??

Thanks