If you sent him a check then you have his address.
He has not posted for a week or so and appears to be a kid with a LOT of expensive parts for sale with a VERY low post count.
This is why post counts and Rep actually matters most time.
I think you are screwed and you'll have to file this under the "What was I thinking" section.
An unknown guy, sent him a check, profile shows nothing that would give me the impression I should trust him.
There are ways to get even with him but you'll need Christopher's help with following this kids IP addy when he creates an alter...Which he will so he can avoid you.
It's been a long time so I guess if it were me I would post massive posts on every item he is selling and warning others that the kid is a thief and did not produce what you paid for.
Chase every post of his with this...Then when he creates an Alter get Chris's help and continue to chase away any customers.
If it continues...POST HIS ADDRESS.
there are many of us who live close to Bellingham.
If he lives in Bellingham, he rides Baker.
On Baker, no-one can hear you scream.
I hate thieves.