bjp

Thanks everyone,
I hear what you say about the valves, living in Australia, makes NOS valves pretty hard to get. If the prices ( exchange rate ) aren't bad enough then shipping kills it. At this stage I will have to settle for the quad set Winged Cs and JJ ECC83 ( gold tip pins ) valve no. 1 and JJ ECC83 s for valve 2 and 3. I will confirm the order tomorrow with my supplier. If anyone has a better suggestion please let me know.

Hampamp ? I don't want to be disrespectful, I think your advice technically is totally sound, and makes perfect sense. I have considered changing every electrolytic in the amp but have been cautious about altering the amps sound. My 1959 MKll ( 76 Model )was a cracker, this one is really sweet sounding even though it's not right, it' must sound insane when it's working well. You obviously have experience with these amps, what can go wrong if I change all the electrolytic caps with precisely the same spec and type as the originals. Can / do modern production methods have a detrimental effect on the sound etc. when these are used ? would NOS caps be a real option ?
Thank you both for your help it is greatly appreciated

BJP