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I did it with the wheel in (mostly because I was fed up taking the wheel, pad etc out by that point.) not sure if it makes any difference in reality - might just be a placebo effect.
last night when I left it, pumping the lever was not expelling any air by the end. this morning when I had a go at it again, the reservoir was basically fizzing with air when I was pumping the lever. so maybe it does work ? who knows
cozzzzzzzz
did you do this with wheel in or with brake block? had the same issue and put it down to needing new pads but could be this too