Send him a ultimatum with a time limit to send you a cashier's check and if he fails take the check to your District Attorney for prosecution. Our Bogus Check Division has some expensive fees from day one and if they fail to pay, they will file charges. Another thing is that if the District Attorney has to file charges, it also ends up on the check writer's nation wide credit reports.
It is such a cash cow that the Bogus Check Division is 100% funded by the bogus check writers. I don't know about the fees in your area but here on a $165 check the base fee is $185 and if charges are filed it will end up being over a $1000.