[sdiy] patch matrix

[ian]

Hi all,
Thanks very much for the replies - been very helpful.
I'm actually fairly comitted to building this thing. I've found sources
for all the old parts (except for the matrix!), and am in collaboration
with an overseas friend who used to own one and is now building another.
So, allthough it might not be wise, I'm going to do it! It's a project
ripe for modding! I have a lot of plans for that already...
I'll let you know how it goes.
Ian