Brother label printer drivers

[Markos Kapes]

Does anyone have any experience with getting a Brother PTouch label printer working with 64-bit Ubuntu 14.04 LTS? I'm using lpr to print the labels, but the size seems not to work, so the labels are twice as big as they should be. (I'm using continuous label rolls.) Brother has been very not forthcoming in troubleshooting, and have no timetable for recompiling the drivers for 64-bit. Everything prints ok, except the length, and no errors seem to be thrown. The command I'm using is
       lpr -P "labelprinter" -o media=Custom.175x120 label.pdf
Also, if anyone has any experience with using another label printer, I'd entertain that....

Thanks,
--Markos