PRE II conversion

[Cyprus Martin]

I’ve decided to convert my PRE II to the Cathode Follower version, I’ve got all the relevant instructions but the bit at the bottom of the page regarding the changes that need to be made to the PSU II has been torn off the bit that’s missing is about what to bypass ZD1 with. I seem to remember that it’s a capacitor but what value I haven’t a clue neither as to what sort it is, I presume an electrolytic but I would appreciate any help. I have quite a lot of bits in my spares box which I would like to use up so I may be that the value of the capacitor is not critical.