On review, issues of law receive de novo scrutiny but the findings of fact are accepted unless shown to be clearly erroneous. Fed.R.Civ.P. 52(a); Debetaz v. Chevron U.S.A., 891 F.2d 562 (5th Cir. 1990). Our review of the record not producing a definite and firm conviction that a mistake has been made, we affirm the district court's factual findings.