[M Desht]

My Model 60B came with both B+ electrolytic filter capacitors valued at 4.0 uF @ 600VDC (Aerovox 610M, big aluminum cans, at over five inches long and inch and a half diameter). All the schematics I've seen indicate they should be 8.0uF (Pt.No.7558). May I replace these with a multi-sectional can rated at 10/10uF, or if I can't find that, something like 16/16uF or 20/20uf since capacitors at these rating are easier to find. Or must I avoid a multi-sectional and use only individual capacitors? Radio has an annoying 60cycle hum.
Many thanks.
MD.