Korg Poly800/EX800 Users

Has anyone found a solid solution to the loss of patches when powering off their Ex-800 
or Poly 800 once the MoogSlayer mod has been done? I have posted on this before and I 
have seen other posts about patch data being lost on power off  but no actual solution 
seems to be revealed. I don't think a simple battery change does the trick. Could it be a 
short out?

any help would be greatly appreciated,

Tom