Here is about half of TT2 with some of the now completed curved boards
Here are the stub ends of the inner curves showing the Tillig superelevation
Peter Archard has been busy building the master control panel, complete with automatic blanking sockets for DC/DCC switching (I didn't dare look inside

TT1 was consigned to memory following a suitable enthusiasts' brakevan special and a final run to collect the station furniture ...