Hello, I have bought sachs shock absorbers for my clio. I shall wish freed the thumb wheels of shock absorbers to be able to act on regulations. But I meet a problem on one of the shock absorbers. The pin of blocking is aligned with the tapping of the screw without head and I do not arrive to reach the screw with a key. I tried to drill the pin without result. I think of being obliged of broken the thumb wheel to be able to remove the screw and the pin. But before making a stupidity I shall like knowing where can i buy one find thumb wheels of regulation for her replaced? If there another solution to be able to freed the thumb wheel? PS: I am French and as you can see i'm not very talented in English. Thank you.