Jumijo:
Thank you for the compliment! Any scenery skills I have picked up over the years have all been unashamedly borrowed from folks like you, Frank53 and Rich Battista.
Ken, I have attached before and after photos of a switch to show you where I cut, the angle of the cut and how much I remove. Of course, you need to remove the switch cover to make the cut. I've used a hack saw and a keyhole saw in the past, but much prefer doing this with a Dremel now. When done, you can glue a small piece of styrene over the opening and paint it to match the switch, if you wish. I've always chosen to just leave it open and so far, no one who has seen my layout has ever seemed to notice the missing corners. I'll apologize for the sideways orientation of the photos. I had them saved right side up, but for some reason they attached to this post sideways.
I should also mention that I add the .22uf disk capacitors to the switches to "shield" the non-derailing pulse from MTH PS2.0 engines. I don't have the issue with all of them, but according to an electronics wiz friend of mine, the reset frequency on some MTH engines matches this little electrical pulse from the switch and causes the engine to stop and reset itself. Once I added these disk capacitors, the problem disappeared.
Curt