Major Issues

[tompm]

Over the last couple of weeks a major issue has developed on the layout that pretty much is making it unusable.

I have been having problems with locomotives surging at various locations throughout the layout. This is happening in both DCC and DC. This started after I began working on the siding for the Golden Valley Canning Company. 

The layout is divided into four power districts/sections. This issue is happening in all four districts.

I have tried numerous things.

Cleaned the track several times.
Replaced a couple of suspect pieces of track.
Removed the fuse circuit.

Nothing has helped and I am at my wits end.