Hi,
I also have a CP88 and it's showing degradation for it's capacitors.
I have found this:
Instrumental Parts
but I'm unable to find other suitable replacements - others rated with the same specs are not the same size and while that doesn't seem to matter, I'm reluctant to try :)

also, found these which I do think should be suitable (for the control-panel board) but please do double check my filters...
Mouser

FYI my own unit's symptoms are seemingly buttons being pushed "by themselves" which starts within a minute or so of powering up the device.
good luck :)