In Devs/printers you will have some printer driver files. Some will be from Workbench and some from Turboprint. I found its best to have one or the other, not both as there is the potential for conflict. Keep the Turboprint one, and drag the workbench one from Devs/printers into Storage. If you don't know which driver is which then you could drag both and re-install Turboprint. You may end up with duplicate lines in s/startup-sequence or s/user-startup afterwards, so delete on of those by opening with ed s/startup-sequence or ed s/user-startup in a cli/shell console.
Once you have the printer drivers properly installed then you may ahve to adjust margins either in the TurboPrefs utility, or within Final Writer form the Page layout prefs (I forget which menu that one is in). Final Writer may also let you choose which printer.device to use: the generic Workbench one which is called printer.device or the Turboprint one. Chooes the Turboprint one.
It sounds like Wordworth is using the Turboprint driver and Final Writer the Workbench one.