Finding missing part for 1980's era two group Bezzera unit

[lawone]

I am rebuilding a two-group commercial bezzera unit from the early 1980's and have discovered that somewhere along the line the dosing unit was removed from this semi-automatic unit. I have been in touch with a bezzera engineer in Italy and unfortunately they don't have any old parts in storage. Does anybody know of any folks or companys that specialize in working on and repairing older units and might be likely to have a "junkyard" of hard to find pieces such as a dosing unit. I have the model number and photos if somebody thinks they might have a lead. Thanks in advance. Buck

[Paul]

hi Buck

Is it like the gicar controller here: http://coffeeparts.com/bez/bez6.html

cheers
Paul