I have a no. 737 Rubberneck grunt tube that was giving problems because of a bad reed. Anyways, I called Primos this morning and they are sending me the whole call brand new without even sending the old one back. It shocked me so much it didn't register at first they were shipping the new one out today. I thought she didn't understand me at first. Surely some customer satisfaction. At least for the customer service part of it. We'll have to see how the new RubberNeck performs. Hopefully better than the other one.