you guys should go to the workshop behind Shell seksyen 7, great and friendly service
cant remember the name of the shop though
i sent my car there since few years ago, my bro & my dad also sent their car there, the price I think maybe just a little higher than other shop, but so far they never try to con people who go there
go find a guy with long hair, he is really friendly and can sembang2 with him while waiting for your car, if not can just lepak at their waiting room, air conditioned, got snacks and can bancuh 3in1 drink also

if got leak at the valve no need until change tyre, just change the valve, around rm6 only if i'm not mistaken