I am glad to hear of the successful outcome of your plight! Now, if the scumbag that ripped you off can be located & prosecuted...all will be well.
If he were to receive more than just a slap on the wrist (and the $400 he stole from that man who bought your set) maybe he'd think twice before reoffending...or, maybe not.
Anyway, it's great that you got your heirloom drumset back!
MarkE