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I had all the brakes serviced and new cylinders and shoes fitted on both rear wheels on 30th January this year. If it is the cylinder, there may be trouble ahead...


Not sure about there but in the US most shops will warranty brake work for quite some time (1yr?).

If you don't absolutely need this rig running it may be worthwhile to bring it back to the shop that did the work and ask them to fix it. Don't say you took it apart and know what it is. Just tell them it's been leaking.