Firstly, to anyone reading this, I highly recommend to get your controllers/consoles fixed by someone professional(which is not this guy). Ill share my experience with him, I visited him to replace my analog stick because it had drift. He replaced it but after that it clearly wasnt fixed properly, the entire stick was leaning to the right. and when I tell him about this issue, he says that he doesnt have the equipments to fix it properly like other professionals. Now the point being that:-
1. These controllers are expensive, so if you aren't a professional, please be open to the customer at the beginning itself that you are not using the tools recommended for the repair. Its a complete breach of trust if you reveal it after you have performed your little experiment. Its a total waste of time for both of us.
He did pay my money back but the difference now is that I dont have my old analog either because he removed it so unprofessionally that it cant be used again.