David,
Heres photographs taken this morning which allow for more accurate viewing. I am in the process of creating a cross-over on the right (Omagh-3) and adding an additional crossover between the first two lines in the sidings (Omagh-2) at the Goods Yard. This should ease the problem. Although I have included the turntable, I am also a little concerned that is so close to the station buildings, which wasn't the case in Omagh. However, I realise I cannot replicate the prototype exactly. Whats your view?