Im off to Digitrains next week to buy a chip for my Ilfracombe Goods kit build. Any thoughts please on sound files? I am assuming that there won't be a sound file for the  LSWR Ilfracombe Goods, so I guess im looking for a good equivalent. As I have never heard one it's obviously not a major issue. I am thinking of the Adams Radial. Same boiler, valves, safety valves and whistle but  obviously a different wheel configuration. What other considerations might there be? Any alternative ideas?