I have also over the weekend, fitted most of the signals and took the wrong ones out and moved them.
Here is the fitting process.
I glued a piece of cork on to the foam to make them the same level as the track.
Then with my Dremel, I drilled a nice hole just smaller than the signal solenoid, so that it fit tightly in the hole.
The siding signals have a square base, so I had to cut the cork square after I made the hole.
Really worked well, so I'm quite happy.
