Firstly, thanks to all for their input on my first posting here, it was a great deal of help.
As I'm starting out with nothing, and have limited funds, I have been doing a fair bit of looking on eBay (but have spotted the over-priced parts, that can be got just as cheap in stores).
Anyway, my kit is gradually building up for my rather ambitious plan for a double layer layout.
The Princess Elizabeth 4-6-2 I ordered has now arrived, and it does need a bit of sprucing up, but seems in fair order. It does at least work anyway. However, I have had some bother with this loco, in that it only runs very sporadically, and has poor traction. The little Caledonian
0-4-0 I got with my starter kit runs very well though, and there are no dead spots on the track when running it.I also noticed the 4-6-2 was jumping a little going over the points. Further investigation finds that the wheels are deeper in the groove than the newer model, and are fouling on the guides in the latest points. Of course it is an old Tri-ang model. I also find that it does rub on the sleepers in the track too, which happens on the new track, as well as some older stuff I got.
I suppose I'm looking at a couple of solutions; Change the wheels for later design, modify the wheels so they fit, or forget it and buy a newer model.