QUOTE: Originally posted by Don Gibson The spring in the PECO turnout's allows the rails to stay in place after throwing with your fingers. It's main appeal is economic - not using sw, machines - but over time and oil and contaminants, electrical contact starts to falter. Pros use additional contact points to insure electrical flow. MOST switch machines have these, and other brands of turnouts are designed for using switch machines. If you have been following recent posts, Peco's springs seen to create some difficulties when mounting Peco's sw. machines.