About the LFO parameter change:
I think it has something to do with FB01’s way to handle the LFO in a multi/configuration vs. voiceparameters in a single voice.
Configuration parameterchange values are 7-bits (one byte), Voice parameterchange values are 8-bits (2 bytes with 4-bits used in each).
It’s easier to write a Ctrlr panel for the configuration parameters than for the voice parameters. The FB01 voiceparameter sysex will need some custom LUA coding to be handled.
BTW: I have started creating a FB01 panel myself, but hardly have any time to work on it.