Korg Poly800/EX800 Users

hi there guys!
im just new to this forum so i may have missed most of the
interesting topics :(

i just got an EX800 a few days ago, ive been lucky since a pal of my
bro simply gave it to me :D

now that ive heard about the modification i could do with it, i just
wondered if someone heard about some other interesting mods i could
ask to some techies in shops to do for me as i suck at electronics :D

if one of you all got some schematics and hints, feel free to
share!!!