i started testing the north end of the yard pulling and pushing some trains thru it. that's when i discovered two more faulty servos. now there are less than 5 spare ones left. while switching a bit in the yard the train derailed at the turnout which connects the lead-in track from main 1 with main 2. it was only a misaligned turnout. but while at it i replaced a total of 5 single turnout decoders with a tamvalley quad decoder. now everything works fine and by using some single frog juices i was able to get all the frogs powered. a bit of track cleaning was necessary to have a smooth running yard entry. one of the tomix track cleaners unfortunately derailed and took a plunge to the floor. frame broken in half. bummer. another one bites the dust. but since this track cleaning car already saw many hours of operation it was close to the end of life anyways. so i just grabed one of the spare ones.