Casio CZ/ VZ/ FZ - Pro Series

bonsoir bonsoir, would it be possible to improve the midi 
implementation of a cz101 (access to osc detune and ring would be 
nice).Would a cartridge solve volatile memory problems?Is it normal 
that my cz (if left more than 4 days off) fills itself with strange 
values far beyond the usual 0~99 or 0~9, or do I own the only casio 
whose lfo plays scales (never heard that mode before) and  eg's sweet 
tics and plucs? bonne nuit.