I've bounced a check twice in my life. Once because I was struggling and made a math error and once because my bank screwed up. Solved both right away and paid up as soon as I found out about it.

I've also had checks given to me bounce twice. Same thing happened...check writer appologized, was very embarrassed, and paid right away.

Unless this guy seemed like trouble before, it will probably work out fine. A customer who is trying not to pay will make excuses and not pay. A guy who writes a check usually has good intentions.