I have A Tin Lizzie as well (I know it's an 18, not sure about the letters after it). It came with a metal Phoenix frame which I love, love, love. The guy who assembled it said the metal ones take about half the time of the old wooden ones. It's super easy to load the quilt, the machine slides wonderfully, and to advance it, you click 3 buttons and turn a crank, so super easy.
Plus, I don't have to worry about splinters :D