We’re sorry to hear that the spreading mechanism on your Snowplow set isn’t working properly, that’s definitely not the building experience we want for you. Sometimes pieces can shift during building, which can cause mechanisms to jam. Reach out to our experts via LEGO.build/Service-BV and they can help look into this and make sure your set works as intended. We hope you’re still able to enjoy building and playing with your Snowplow and Happy new year!