I'm trying to find this specialty audio grade capacitor for my venerable Yamaha Pre-Amp (C-80 as I recall). When in use for an hour or so audio in the right channel will get static or cut out. I've gone over everything on the board. I can't find any cracked solder joints. The pots all seem fine. All I could find were these two slightly bulged capacitors. So I think they are the problem. The problem is I can find ones which match their voltage and uf ratings. But they are all two pin and appear to be rather small. While the capacitors I need are four pin and rather large. One side reads Nippon Chemi-Con. Audio Neg. Black 85 (degree symbol) C. It appears the part number on top is 58GAH. They are rated (B) 35v4700uf(M), (A)(C) Blank, (-).