gkb wrote:
Don't let the "mica" caps fool ya.

Well, your milage may vary. I've clipped out at least a thousand old
wax caps, two hundred plus plastic tubulars, and lesse, three discrete
mica caps, and around eight of those wafer mica caps built into IF can
bases.

Mica's can go bad, they just don't seem to do so very often IMHE.