This document discusses the design modification and analysis of a fixture to accommodate different steam turbine casings. The existing fixture design is modeled and analyzed using finite element analysis, which shows high vibration and stresses. The fixture design is then modified by increasing the number of truss members, adding horizontal support members, and relocating control points. Analysis of the modified design shows reduced stresses, deformation, and vibration compared to the existing design. Specifically, the modified design increases natural frequency by up to 138% while reducing equivalent stress by up to 94% and deformation by up to 94%. In conclusion, the modified universal fixture design improves handling of different steam turbine casings with less vibration and stress.