Thanks Phil. I should have mentioned, though, that I use Linux, so I'm still mostly with PT8 / 9.0... I tried 200D (Alt-X) and then 2003 (Alt-X) in the Module in PT8, and I think the 'zero width joiner' helped the long space to stick (previously, it just got stripped out...), BUT for some reason the 'R' with the zwj + long space in front got bumped up to the end of the preceding line!? Too weird.
I still wonder if there anything that would work in an earlier version?