AquaCraft will warrant their kits for 90 days after the purchase from defects in materials or workmanship. AquaCraft will either repair or replace, at no charge, the incorrectly made part. Make sure you save the receipt or invoice you were given when you bought your model! It is your proof of purchase and we must see it before we can honor the warranty. To return your AquaCraft product for repairs covered under warranty you should send your item to: Hobby Services 3002 N. Apollo Drive, Suite 1 Champaign, Illinois 61822 Attn: Service Department Phone: (217) 398-0007, 9:00 am