Hi, I have a braking issue on a bike, bought new in Jan/Feb this year. Since very shortly after acquiring it the rear brake of the Shimano 105 is quite 'sticky'. What I mean is that rather than a nice smooth pull on the lever to gradually apply and increase braking power it takes a good firm squeeze to apply this initial force which results in the initial force being too great. It's not a case of having to pull the lever a certain distance until the brake engages but of having to move the lever a certain distance until any effect occurs.
I have tried lubing the lever mechanism itself which has no effect and the same with the brake cables. When I increase the distance from the pad to the rim using the adjustment lever on the side of one of the arms this does seem to reduce he problem a bit but obviously this is not ideal.
Can you suggest what this problem might be?