If you need translations just do a search on BABEL- Altavista, there is a great tool that will translate russian to english and many other languages. I am now in the process of translating a lot of stuff from the link you posted. It is just a matter of copy and paste.
Для квалифицированного подбора необходимого вам товара, вы можете позвонить по телефону (095) 932-70-22.
Production BOSCH for the qualified selection of the necessary for you goods, you can ring on telephone (095) 932-70-22
Потенциометр = Potentiometer
The price posted I assume is in Dollars, $51.00 is not bad compared to $500.00 for the whole unit. If I had your problem I would jump into purchasing the pot alone (that is just me, not a suggestion) and see if it solves it.
I read somewhere that XP190 (not sure of his screen name) was able to calibrate his, and I do not remember him posting anything about bending the arms.
Just out of curiosity, can you post some more pictures of the riding arms and the opening where the pot was?
Keep us updated.
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car