The one spacer I can see is on top of the strut brace foot on the drivers side. The spacer should go on the stud and the strut bar on top, ie all spacers under the feet and strut bar adjuster re tighten.
I like your tpms install
Ive had a cat back system from MIJ and would do again if the price was right.
My last system on my old Almera GTi
2.25' mandrel
Good service and the system was well built for the price.
David