When I recieve an instrument that is this bad I usually just skip the play testing and get right down to business. After cleaning the the instrument inside and out, I noticed that the leadpipe was corroded to the point that it had several cracks and need to be replaced. Other than the leadpipe, there were no other parts that needed to be replaced.After the initial cleaning, I then completely dissassembled the instrument and began to inspect and work on every individual part, smoothing and detailing the body and braces. Once the body, bell section and braces were done, it was time for reassembly. After it was fully assembled, I gave it a full chemical flush and prepped it for plating. It was then re-plated with a bright silver finish, throughally play tested by yours truly and buffed for the final time before returning it back to the customer.