I have a small layout, and use tubular 027 tracks with minimum 027 curves throughout. The Lion Chief Plus that I have is the New York Central Hudson version and I think it's terrific and so does everyone that I show it to...the one problem that I have noticed is that by using a high fixed voltage as a power source, my vintage 5121 and 5122 L/R 027 switches can be quite noisy (i.e. Buzz) when trailing cars pass over them. Tried bringing out the fly swatter...but that didn't help and lowering the power isn't an option. So what I'm hoping is that somebody might have a suggestion for an easy remedy/fix to help quiet them down? Thanks...