This may sound stupid but ,I think it's called the table it's the platform that clamps around the 2" or so tube in the back raises up and down I'm sure you guys know what I'm talking about . But anyways mines a casting and it broke where it clamps onto the tube and I need to replace it . Do they sell a generic replacement anywhere I'm sure it would need to be tube dia specific . I'd google it but like I said I'm not sure the correct name of it