Just messing around trying to see if I can post these pics apols if they're too big or not there or whatever:-
They are of the bends that I've put in on my MT-205 hope they are of use if someone out there finds another one of these little beauties.
(EDIT) ok so it looks like it's worked eventually... here are the bends:-
Top right switch is a two-way toggle, one way turns off the release envelope and the other way does the same but with a reverb effect thrown in for good measure. Both also have the added effect of pitching up whatever note you played by one semitone, worth remembering if you're playing with a band!
Top left switch is another two way toggle, this one turns on the repeating note patterns, two different speeds are available. Some interesting and unpredictable effects are possible with these.
Both of those switches also glitch the drum patterns in a pleasing way, used in conjunction with the sliders there are hundreds of pattern combinations available all of which can be switched mid phrase for even more variation.
The red wires lead to a switch, a 470ohm pot and a 1k skeleton trimmer at bottom left. The switch engages the distortion/ oscillating feedback effect, the pot adds distortion and tunes the feedback tone and the trimmer is for tuning the start point of the feedback.
There are two switches above that pot, the blue one is a straight on/off lead distortion. This distortion is nice and brightens all of the sounds up but it's a massive jump in level so I'm not sure how I'm going to use it live...
The Red switch is a little more subtle it seems to remove the lo-pass filter. Still opens up more tonal variation. Doesn't work on all the patches though.
The log pot and trimmer that you see by the output jack may not be staying... I was getting some odd effects playing the keyboard into a practice amp at one point that I thought were to do with the level being too hot out of the speaker output but I now think it's more likely that what I was hearing was something to do with low batteries.