Rule 52 F.R.Civ.P. applies in adversary proceedings, except that any motion under subdivision (b) of that rule for amended or additional findings shall be filed no later than 14 days after entry of judgment. In these proceedings, the reference in Rule 52 F.R.Civ.P. to the entry of judgment under Rule 58 F.R.Civ.P. shall be read as a reference to the entry of a judgment or order under Rule 5003(a).