My (admittedly limited) experience with FASTRACK switches with O48 curvatures was 100% perfect out of the box and onto the layout. Never had a problem in operation.
However, this recent thread shows that the manufacturer in China may be "asleep at the switch" during assembly and wiring. A very helpful suggestion to check the action of FASTRACK switches at the dealership before taking them home and installing them in place.
Kudos to the operators who could "boldly go where no one has gone before" and achieve a positive result.
Mike Mottler LCCA 12394