Another 4558 Question

[Tim Curtis]

I just resurrected my Moog Prodigy from the dead - it was the 4558 Op
Amp at U16 if anyone cares.

I can't find a replacement here n town, so I got it up and running with
a 1458.  Since I have ti order a replacement 4558, would it make sense
to get several and replace all the 4558s in the unit?  (I don't know if
those things go over time.)  If so, should I also replace the TL072s?

Thanks,


Tim