If Hornby are going to introduce a DCC system, it might be politic for them to reexamine how DCC chips are fitted to their steam locos. Given that newer models appear to be more finely detailed, with relatively fragile parts, dismantling them is not particularly easy. If DCC is a way forward, then Hornby need to consider designing models to which chips can be fitted with the minimum of fuss. Your website guides are good and clear, but highlight the current failings in the designs. It might be worth asking Simon Kolher or others at Hornby, how far they carry out reverse engineering on products made by rivals, both at home and abroad, and where they intend chips to be sited in the future.