Just a note on my experiences with those quick release clips. I struggled with them for about 6 hours before finally using more force to pry off the connectors than I'd thought prudent.
I could push the two stainless clips in by hand but the connector would not release. I tried a jubilee clip, and even a jubilee clip with extra little nuts positioned over the two stainless bits. But still it wouldn't budge. Then, with the jubilee clip tightened over those stainless bumps I twisted and the top connecter came free. The bottom one took prying with a big screw driver but it came off OK.
(on a 1.6 Stilo)