Thanks, Eric,
Your email copy from thirteen years ago is quite telling about an issue Neumann struggled with at the time: what service and parts support should be envisioned for obsolete mic models.
The reissue, and in some cases re-engineering, of vital U87 parts, including the complicated head assembly during the last few years seem to indicate a renewed emphasis on client support, even if that support means no net financial gain for Neumann/Sennheiser (U47fet reissue, anyone?). I find this attitude laudable and rare in our business.
I have my doubts whether the slider switch on KM8x is being reissued or whether what shows up is old stock left over in small quantities, but so far I have been able to obtain these and other Fet80 mic parts from Neumann without problems.