On that note I am going to pass a quick judgement on the TTS chips I have. I absolutely love Merchant Navy unrebuilt, King, Castle, Hall, P2, A1 Tornado, A3, Coronation and Black 5. I do not love Crost 9F and A4. Maybe early ones not so sharp. I believe 9F was first, pre-fitted into a railroad Crosti? What I hate about this is the whistle ending abruptly cutting off the echo. Sounds awful. A4 should have a better array of whistle/horns for such a popular loco. By contrast Merchant Navy has loads, eg a wonderful "passing whistle" and "strange whistle", both of which are fantastic. Why not make more effort with A4? However I may be being too harsh as mine possibly soundsparticularly awful due to bad sepaker. Sorry if that's a veer off topic. Anything to avoid doing my tax return. IF ONLY Hornby products were tax deductable 🤔