Creek CAS 4040 problems and speaker coupling electrolytic query

[bikelectro]

Hi folks,
I've owned this amp since '84 and recently decided to recap it with Panasonic audio grade electrolytics, on doing so i noticed a slightly cooked 1/2 watt resistor in the driver stage of one channel. The amp seems to sound fine, i can't detect any difference between channels, so for the meantime i upgraded the resistors to 1W metal films and the unit is in daily use. But the supply volts are down about 10 percent in 1 channel because of this so i think it needs to be sorted.The amp could have been this way for years, or even from new! I did lift the outputs off the heatsink and they do not overheat on idle so i think it is the driver stage. I fitted new darlington o/p's and the BC639 drivers but to no avail. I only have a slightly wrong cct kindly sent by Creek, but it is a poor scan and is blurred, hence i cannot give a cct ref for the 1K resistor. Mine is the 2nd version with the phono socket on the phono i/p and not the early one with 5 pin din. Has anyone got a better cct diagramme?
Also i would like to renew the speaker coupling capacitors, they are marked; Rubycon 3300uF, 35V, CEW, what is the best modern equivalents and where to obtain. I have access to CPC and RS components. If anyone has any ideas, they would be most appreciated.