[codefox1]

Agree, don't have to replace all carbon resistors, but as they age they do drift, and become unreliable in other ways, as in temperature sensitive and porous, or noisy. Well, if the set is not too complicated and difficult to work on, a couple of dollars in nw resistors is worthwhile and easy enough to do whilst replacing the capacitors. Long term reliability and performance improved if done. I do this almost all the time now.