I have a non-ROM version of the 2x APO Extender-R. There seems to be some confusion (at least to me!) as to its compatability with ROM lenses. Does anyone have any ideas? I am only really interested in using it with the 100mm 2.8 and the 80-200mm 4.0, both of mine are the ROM versions. To be fair I have asked Leica in NJ and they told me don't mix ROM with non-ROM. It's just I noticed that some of the lens instructions mention it and some don't. Also non-ROM lenses work with the R8 body, I would have though the principal would be the same. I should probably just take their word for it, but I was curious if anyone had been told different.