Excellent!
I spent a lot of time in Lime Street in the 'fifties and can't recall a big gap in the roof! I can though recall almost everything else about the model being there. Superb work people.
By the way, you need really to model the Legs og Man pub as well. For those who don't know the area, looking at the station from the steps of the George's Hall, it was fronted by the North Wetern hotel, to the left of which was and is the Empire Theatre, then the Legs of Man on the corner with London Road, so handy for the station. In fact, it was an integral part of the station for many crews between trains. I was told this story (from the 1980s) by a very good friend who was at that time a driver at Lime Street.
At that time, licensing hours required a closure between the lunchtime and evening openings, but the manager realised that, with trains arriving and leaving Lime Street throughout this period, he would be losing an awful lot of business. Then one afternoon, the police raided the Legs of Man and took away all those caught inside. There was chaos in the station as trains, long overdue for departure, stood alongside the platforms bereft of either driver or guard, or possibly both, who were 'helping the police with their inquiries'. Moreover, with so many platforms occupied, inbound trains were blocked back for many miles waiting for a platform to become free. Apparantly, it took hours to clear the mess.
Happily, my friend wasn't a customer of the Legs of Man!