Hi Keith, and thanks.
Didn't know it was RM-S171, got a S/H one from the Flea.
Noticed that 'High Street' does a new pattern RCU, so went to Wiltsgrove (same firm) to get it cheaper, but they have no stock - Curious - Thanks again - Chris.
Later - Got the RM-S171 from the Flea, and it wouldn't work the set - Didn't have the right buttons. Discovered there's another RM-S171 that probably does, as has cursor keys - Now to find one, somewhere.
Thought a piccy of both - The one to the right is probably correct for the set.