The 4 MN3008 (2048 stage BBD) chips are exchanged with MN3005s 4096 stage BBD). This doubles the delaytime, gives a little bit more analog (= nice) distortion when feedback is opened up. Also the opamps are exchanged with better ones.
It's just a simple pad patch going through the MM with maximum delaytime, feedback on 2 o'clock and a little pitch modulation from the MM added.