In cases tried without a jury or with an advisory jury:
If a party so requests, the court shall dictate to the court reporter or prepare and file a brief opinion containing a statement of the grounds for its decision and the method of deciding any damages awarded.
The court may, or if requested by a party shall, include in the opinion findings on the controverted material fact issues specified by the party. Any request for an opinion or findings of fact shall be made on the record before the introduction of evidence at trial or at such later time as the court may allow.
All fact issues upon which no specific findings are made shall be considered as having been found in accordance with the result reached.
Mo. R. Civ. P. 73.01