Ok, but bear in mind I've no electronics knowledge whatsoever and am just hacking around haphazardly...
What I've done dismantle it a bit. The pads are connected by a sort of ribbon cable into a handy little connector on the board; on mine I've removed the pads completely and am just going to use it with triggers at the moment. When you hit a pad it shorts the circuit to ground; therefore to trigger it from a +voltage I'm using a v-trig to s-trig convertor (such as this:
http://www.retrosynth.com/docs/trigger/triggermod.gif), the input to the transistor being the point on the board where the relevant pad is wired in.
In terms of rehousing all I've done is shove it in a bigger plastic box; as I say, removed the pads and am in the process of adding a couple of rows of knobs above the existing controls. If I was feeling particularly ambitious I'd remove all the existing knobs and buttons first, but I'm not so I haven't.
Nothing useful on the web about it all as far as I can tell either; shame, but I guess it makes exploring it a bit more interesting. What I would like to find is a way of increasing the decay on the kick - it's a good kick drum, but I'd like more of it. Again that would probably take me 5 minutes if I knew what I was doing but as I don't I expect it will take a good deal longer...
How is it possible to trigger it from plus voltage if the MR10 itself runs on negative voltage? I tried to trigger it with a MT100 midi to CV converter which has an S-trig out....
