All about the Roland Jupiter-series

Hello...  yes,  this  is  my  first      post  here,  though  i've  been         lurking for about a year. what a    fantastic group this is! i've had my  JP-4 for about a year now. i've been  triggering the arpeggiator with a Linn   Drum or a CR-78 and i've now been     dying to program sequences for this      incredible synth. alas, the JP-4,      of course does not have CV/gate inputs. i've read here that someone had theirs  modified and put on CV/gate ins and outs. can anyone recommend someone who  does this mod?  furthermore, i was  wondering if this mod would even be  worth doing in the first place and maybe a MIDI retrofit would be the way  to go.any suggestions? i mean i would love to be able to connect my CSQ-600    to the Jupiter. i want to be able to   sync a sequencer along with the CR-78 drum machine.     thanks   much-                            friction