I have an AVR400 being used as a preamp and a Naim Supernait powering the fronts, unfortunately the Arcam and Naim remotes clash! Anyone know how to change the remote codes the AVR400 (I presume also AVR500/600 & AV888) use? The Arcam manual says :- "Change remote code - The default RC5 system code the unit responds to is 16. If required, for example due to another device in your system also using this RC5 system code, it can be changed to 19." Although it says it can be done unfortunately it does not say how to do it!