Crumar Musical Instruments User Group.

I'm in the process of restoring a virtually dead Stratus, all that's
left to replace is a faulty CEM 3320 chip on one of the
daughterboards, but I haven't a clue where to pick one up cheap. I'm
in the UK, but if I have to get one abroad as a last resort, then so
be it.

Does anybody know of any reliable stockists of Curtis / CEM chips?

Thanks in advance.