Hi Stuadh,

> > A151 - install a switch like the new version to select 2, 3 or 4

steps.

>
> center terminal of the switch -> reset input via a standard diode

(e.g.

> 1N4148), cathode (-) on reset socket
> end terminal 1 of the switch -> CD4053 pin 14 (LED control for I/O 2)
> end terminal 2 of the switch -> CD4053 pin 15 (LED control for I/O 3)

In addition Peter Grenader describes how to do the mod here:

http://www.buzzclick-music.com/mods.html

Note also that I think pin 14 above should in fact be pin 11.

If interested, I can take a few snaps of how I've done the mod on mine -
it is really straightforward!

Tim