The controversy surrounding the MS Americana 127's patches gained momentum in the 1990s, when a group of purist preservationists launched a scathing critique of the locomotive's restoration. They argued that the numerous patches and modifications had significantly compromised the engine's historical authenticity, rendering it more of a "Frankenstein's monster" than a genuine piece of railroad history.
Over the years, the MS Americana 127 underwent numerous repairs, renovations, and modifications, which have become the subject of much debate among preservationists and historians. While some argue that these changes were necessary to ensure the locomotive's continued operation, others lament the loss of its original character.
In 2019, a comprehensive restoration effort was undertaken, which included the installation of a new boiler and significant updates to the locomotive's mechanical systems. While this work has ensured the MS Americana 127's continued operation, it has also sparked renewed debate about the locomotive's authenticity and the propriety of ongoing modifications.