Warm electrolytics?

[Jonathan]

My CTC9 uses two 160uF 350V electrolytics in it's voltage doubling circuit. After a while, these capacitors get a little warm (not hot), but the sound (which is the only thing I could test) still performs fine. it's not hooked up to the picture tube and the horizontal oscillator and output tubes are removed. I put a new 160uF 350V electrolytic in, and left the multicap 160uF/50uF/50uF in. Both get warm to the same degree. Could the multicap be bad? Is this normal for these to get warm?

Thanks.

Jonathan