UPDATE:
So, I opened up the meter and now the circle-ended needle seems to move, if a bit begrudgingly. I framed and metered my room and the Rollei said a balanced exposure was 1/4 at f/4, which compares pretty decently to the same framed area metered through my Pentax 67II set to aperture priority. (it metered 1/3 @ f/4) So, while I remain cautious and will probably depend a bit on the sunny 16 rule, etc when shooting the Rollei, it seems to work decently. That said, I'm still sending in for a complete CLA when I get back to the USA at the conclusion of my study abroad program.