After the court sends original findings of fact and conclusions of law, any party may file with the clerk of the court a request for specified additional or amended findings or conclusions. The request for these findings must be made within ten days after the court sends the original findings and conclusions. Each request made pursuant to this rule must be served on each party to the suit in accordance with Rule 21a.
Within ten days after such request is filed, the court must send any additional or amended findings and conclusions to the parties as provided in Rule 21(f)(10). No findings or conclusions shall be deemed or presumed by any failure of the court to make any additional findings or conclusions.
Tex. R. Civ. P. 298