I don't know of any Solex 44 PHH experts in North America (they seem to be in Germany and Austria, where a rebuild costs about EUR 900 per carb). The greatest weakness of the Solex carbs seems to be that the seals around the butterfly valve bearings start leaking (allowing false air to enter and making the mixture lean) and that wear of these bearings leads to imprecise butterfly valve function -- which leads to problems with progression from idle to acceleration (and tuning problems where behavior changes without any changes to setup). Correcting these problems is what makes rebuilding these carbs so expensive.
FWIW, I just posted some links to Solex information here that may help you understand how these carbs work.
Please note that there are differences between 102 (2000) and 106 (2600) and Mercedes 190 SL carbs that may make them not completely interchangeable despite the same Solex 44 PHH designation (but there are differences in the bodies that allow some degree of identification where the carbs came from).
A friend of mine, Mark Dubovic in Florida restores carbs and he has a Two-Liter so I am pretty sure that he is familiar with the Solex Phh44's. His email address is
dcoecarbguy (@) earthlink (.) net or 813-786-7534. Mark advertises in the Alfa Owner every month along with Gary Martin (605) 430-7368 who also restores Webers to be "virtually indistinguishable from NEW". Perhaps it would be worth a call to them both to see who can help. It may be a good idea to source rebuild kits ahead of time.
Will, you may get better results posting this question in the GT (1963-1977) forum, where it will get much more exposure.Solex rebuild kits for Solex C30 ADDHE, for a gt junior 1300, need to find 2 rebuild kits.
Help! Thanks Will