Valve calibration

[Juanca]

Hi friends

I need to calibrate the valves on my RX3, the rattling noise and the missfire needs to end.
I check everything you guys told me, from Gas, exhaust leaks and even reset ECU by doing it as NZ said.

Since I am completely dumb on engines, can you please let me know what gaskets i need to buy for doing this valve calibration?

Also I read in another thread, clearance needs to be between 0.06 - 0.08 correct?

Thanks a lot