Thanks Russ. That would certainly make sense, the more I understand how these brushes and the metering circuits work. Looks like I'll need to take this puppy apart and redo the pad replacement

. It turns out that in my test roll, once I got it scanned, the wide-aperture shots indicated that the camera is back-focusing, so while I'm in there I'll have to adjust the RF as well. (I know that could be done under the accessory shoe with the camera top on, but if I'm going to have it topless anyway...). Ah, the joys of a five-dollar camera buy.
--Dave