Casio CZ/ VZ/ FZ - Pro Series

Today I replaced the pitch bend pot and all the problems disappeared... 
  Fixed! :)

The bad thing is that I've been unable to find a 618k pot to replace the 
original. I bought one of 1000k (1 meg ohm), but I'm not sure if this 
can be dangerous or not. If someone can throw some light into this issue 
I would be very very grateful! :) For now I have not tried to turn it 
until the limits, I just turned it half then moved it a bit until C was 
C and not D# :) It's been working without any problem for about five 
hours now.

Thanks a lot,

Manu