[Amps] Source For Eimac Socket Accessories?

[RICHARD MEASURES]

>At Dayton 2002 I picked up a homebrew 8874 amp for 432 MHz.  It appears to 
>be a reasonably well built copy of the K1FO amp which was in the October 
>1979 QST and several of the ARRL Handbooks from the early 80s.
>
>The amp was apparently built with the wrong grid collet assembly.  (Perhaps 
>the builder used what he had, in the best ham tradition.)  The amp exhibits 
>some operational problems as documented in K1FO's followup article in the 
>July 1987 QST, which are traced to the grid collet.
>
>My question is, where can one buy Eimac grid collets and other accessories 
>related to power tubes?  ...

€  Richardson Electronics in Chicago.