Not sure if it was on here but someone advised that on the 1.8 auto there was some external valve/solenoid that should be replaced as a precaution.
If anyone has experience of this I would appreciate to be reminded.
Cheers
Remember the article, I believe Mazdamender did it, have an Internet search and you will find it. 
Barrie
That’s it!
Thanks very much
Result! Not often I’m right! 
HTH
Barrie