rear caliper rebuild

Hi all

I have a set of Octavia vRS rear calipers to rebuild. I stripped them over a year ago so can't remember where all the seals go - the one i'm not sure about is only slightly smaller than the piston boot, does it go somewhere on the actuator?

For reference, the actuator's been removed and i reckon it's going to be a pig to get back in place.

Also, is it worth fitting the Alhambra spring? (my car is a Fabia btw)

Edited 23 April, 201511 yr by Kevin_Mc