Hello Fraula,
I have a mk1 1.6 Eunos and after having the clutch done twice locally I experienced a lot of noise issues.
Basically the PPF alignment may have been part of the issue and the quality of the clutch components. Yours is a later 1.8 so not sure if you will be affected in the same way. My advice would be to use the genuine Mazda clutch components.
Vincent resolved the issue with genuine components. I would recommend (2h 30m) this garage, he showed me the difference from the standard Exedy clutch and the genuine clutch plate.