...It sounds plain "tinny". I will probably recap certain sections soon.
More likely to be the BFO adjustment relative to the center of the filter passband. Does the pitch
of the background noise change when you switch sidebands?
My Argosy is the prior generation (and I also have the original Argonaut 505) and I haven't had
any problem with electrolytics yet. I don't have any plans to shotgun the capacitors until I see
at least a couple of them fail.