Emu XL-7 & MP-7 User's Group

Hello group,

I was uploading with E-Loader two complete banks of factory patterns
(XL & MP) to my CS. To my surprise, at some point patterns weren't
saved properly. Also, it was impossible to store (copy) any pattern
from the level of CS. After booting CS with both cursors pressed and
initializing user data, my empty CS informs me - when I try to save a
pattern - that only 78% of memory is available. This is a very old
one, since it came with manual Revision A. Is it possible that flash
memory is shrinking because of wearing on? And if so, is it possible
to replace it?

Thanks for any hints,

Bruno