Thanks a lot @brownrose78 for the motivation.
InshAllah taking this forward.
Regarding AC modes, all modes were working before i handed over the parts and car to Quickcool, but after their working, some modes became too hard to operate. They attribute this to thick foaming that they do. Not sure about this though.
Rheostat, no, not yet. I am not sure who will help me uninstall the fuel tank and reinstall it. The mechanic (irshad) said he wont do, the denter also is delaying it. So i am just trying to figure out a way.
And yes, i will place rubbers definitely. Thabks a lot 