I was wondering if I could get a quick sanity check/feedback on how I go about tuning Bandpass duplexers. Some recent follies have had me questioning whether I'm doing it right.

1. Unharness all cavities
2. Take a direction coupler/return loss bridge and quality 50 ohm load and go cavity by cavity, tuning each cavity for best return loss
3. Normalize all cables and hook up to each individual cavity for insertion loss, adjust loops for desired insertion loss if applicable, set notches
4. Harness up all cavities
5. Now, after I harness up all the cavities, should I readjust each pass for best return loss? That's what I normally I do but while working on a duplexer, it was said not to touch the pass tuning after harnessing back up. But if I don't, I'm wasting insertion loss and return loss match and some performance.
6. Set notches on each pass

What's the proper method here or what are people's thoughts on this?