Delaney Gallay Demister Tubing

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I am trying to find demister tubing for the Delaney Gallay heater as fitted to later Ace.
   Dayco has the proper thing, ie paper covered aluminium core Emission Control Tubing but the 1.5"ID is too large.Should be 1.3" to fit the heater outlet and screen inlet. Victoria British etc only have the Dayco 1.5 ID tubing which they supply to A-H, TR3  etc.
   
   Does anyone  have any ideas who can supply?
   
   Best regards to everyone,
   
   Jonathan Parker
   
   AEX 1194