Thanks Steve!
I'm now catching up on the failures from the running session, well a couple of them never made it past the pre session test..
60886 had a derailing pony truck - I'd omitted to add the guide wire to it, I also added some lead weight. She just needs a crew now.
92069 was intermittently shorting, needless to say, on test, she behaved.....
I couldn't get the Wickam trolley around the layout without it stalling, so I added extra pick ups on the trailer - it runs round perfectly now.
I picked up the GC bridge etches last weekend, I just need to cut the girder sections from brass sheet, fortunately I have access to a flat bed guillotine which I hope will do the job, as I find it relly difficult to cut long straight lines in sheet material...