I have been saving a lot of money on shipping since I started using Stamps.com. I had no idea that using them, I could get much better than over the counter shipping rates. All I did was create an account, and fund it with like $50. I put in the address, dimensions and weight of the package (box or padded envelop), print out the label and drop off at a UPS store. I bet shipping a horn would be less than $8.
Anyway, I managed to lose one of these red washers:
And, I'd like another of these black plastic parts.
However, both are only accessible after drilling out the rivets and they are easily damaged if you are not careful. I'd rather pay for the shipping and do that part myself.