Hello
we assume you are using the latest OS V4.01, otherwise please update the unit to it.
The ModBlock is a system area that can be bridged to any/every single preset by patching parameters to its mod sources.
The page you refer to has incomplete info on the ModBlock. The complete info is available on page 43 and on.
There is a setting under SETUP>MODES > MODBLOCK: choice here is Global or Prog (meaning per preset). If you set this on Prog, the Modlock will have different parameters values for each preset, stored with it. If the choice is Global, then those values stay the same across all presets that use the ModBlock.
Using internal or MIDI Clock doesn't matter, as you pointed out.
all the best
I
