11; 40 Fed. R. Serv. 2d (Callaghan) 954 [HN11] The decision whether to allow substitution is discretionary. Collateral Control Corp. v. Deal (In re Covington Grain Co.), 638 F.2d 1357, 1360 (5th Cir. Unit B 1981); Prop-Jets, Inc. v. Chandler, 575 F.2d 1322, 1324 (10th Cir.1978); Fontana v. United Bonding Insurance

11; 40 Fed. R. Serv. 2d (Callaghan) 954 [HN11] The decision whether to allow substitution is discretionary. Collateral Control Corp. v. Deal (In re Covington Grain Co.), 638 F.2d 1357, 1360 (5th Cir. Unit B 1981); Prop-Jets, Inc. v. Chandler, 575 F.2d 1322, 1324 (10th Cir.1978); Fontana v. United Bonding Insurance