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Changing jubilee clips on flexicom 24cx flow link pipe?

I have had the leaky flow link problem on my flrxicom 24cx when the pipe gets cold in the night it leaks and the pressure drops cutting out the boiler, people have mentioned changing the jubilee clips, do you just add a couple of new ones or remove the existing ones first? and how easy is it to do?
mwp, February 2016
the word in the answer was changing, not adding

XXX, February 2016