[AI2V]

You shouldn't have to remove the switch shaft. I didn't and was able to replace all of the bad components but it is difficult. It's not VHF or UHF so the components don't need to be exactly positioned as originally. You can snip out bad parts leaving the leads and making hook joints. Apart from the usual .01's through the 0.1 caps and the big electrolytic, your primary interest should be in the nasty front section; don't worry about the resistor values in the 2nd and 3rd sections unless they are easily replaced.

I could not have done any of this without a high intensity LED light on the end of a length of wire; that simple light allowed me to see all sorts of things otherwise hidden. It's a MUST for servicing this series. Surgical clamps are also a necessity. Also I'm assuming that you have a pencil type soldering iron and not one of those half-loop Wellers.

If your tube sockets look corroded or bad, now is the time to replace them.