What if the fixture is the wrong size? Can I return it? May 10, 2019 19:21 Standard fixtures can be returned for exchange or refund if they have been unused. A restocking fee may apply. For more detail about our returns policy click here. Related articles Modelers have building switches by hand for years. Why do we suddenly need an Assembly Fixture to do this? Why are prices in US dollars when Fast Tracks is a Canadian company? Building Turnouts Using Fast Tracks Assembly Fixtures. What is the delivery time for an Assembly Fixture or other tools? Are curved turnouts numbered differently?