Don't know if it will help or not but I sent a few pistons and sleeves to a guy in Utah for re-chroming years ago and after months of the same sorta crap I called a collection agency near him. They advised me to send a registered letter assigning a fare market value to all the items owed and if they were not returned within two weeks that the collection agency would be knocking on his door. Apparently they work for a percentage and can be very nasty, calling his home, showing up at work, ruining what's left of a credit rating, etc., etc.
Got my chit a week later...