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What I would do here is, remove the dawes, check the spring again, and make sure the spring is not binding up inside the dawes. Sounds to me it is and its not letting the tension off the spring. When you put it back together, wind the dawes in slow and you will feel the spring in there slipping on the adjuster cap, if it feels notchy, check that the spring hasn't dug a small groove in the body of the dawes causing it to catch. I get quite a few people come to me with issues like this and its just the spring causing is from the constant adjust and re adjust. You'll get it soon enough mate.