Grannyring,
Lytics are not necessarily bad when they are used pre-regulation. I use Nichicon 400V audio grade caps in my amps for smoothing before regulation. Check mouser or digikey and see if your current caps are low ESR. If so they are good enough for pre-regulation smoothing. You will need the high capacitance to smooth out ripples and lytics are great for their size. Post regulation is a different story. Quality matters a lot more than uF. Lytic caps are inherently lossy. For bypass I try to use oil cans as long as they fit. Now Paul may have different thinking as I notice lots of lytics in the Dude. Heck the output coupling caps were not your state of the art thousand dollar cap but rather Mundorf Mcap 47uF as I recall.
Lytics are not necessarily bad when they are used pre-regulation. I use Nichicon 400V audio grade caps in my amps for smoothing before regulation. Check mouser or digikey and see if your current caps are low ESR. If so they are good enough for pre-regulation smoothing. You will need the high capacitance to smooth out ripples and lytics are great for their size. Post regulation is a different story. Quality matters a lot more than uF. Lytic caps are inherently lossy. For bypass I try to use oil cans as long as they fit. Now Paul may have different thinking as I notice lots of lytics in the Dude. Heck the output coupling caps were not your state of the art thousand dollar cap but rather Mundorf Mcap 47uF as I recall.