I found BSA Twin Restoration on Amazon for about £25. Also on Ebay for
about the same price:

http://cgi.ebay.co.uk/BSA-TWIN-RESTORATION-BOOK-BSA-TWIN-NEW-BOOK-
BSA_W0QQitemZ8013039897QQcategoryZ36796QQssPageNameZWDVWQQrdZ1QQcmdZVie
wItem

BSA club meet at the Bold Forrester, Soberton Heath this Thursday.
Maybe worth visiting them for some advice.

RFS

--- In Solent-BMG@..., "makeamend" <steve.davies@d...>
wrote:
> 2 things, where might I obtain the book BSA Twin Restoration by Roy
> Bacon or equivalent. Secondly how do I remove the plungers from my
> frame, in prep for powder coating. TIA