Where the alleged fraud is based on perjured testimony, the movant must establish that the witness "wilfully, knowingly, and falsely" stated some material fact under oath. Territory v. Kaahanui, 29 Haw. 827, 829 (Haw.Terr.1927). Testimony that reflects an opinion or approximation as well as testimony that is not willfully false will not give rise to a potential ground for vacatur. Fleming, 158 P.3d at 1113.