For a about 6 months or so my handbrake doesn´t want to release back. When I pull it it will hold good but by this time I have to take a small hammer and dapp the lever back, otherwise it is holding . It is a little more on one side. The cables seem to be in good condition.Do the calibers need to be taken out and cleaned or is there another way. I put in new brake pads approx. 1 year ago. With much appreciation for an answer. I would be very thankful.With warm greetings from Mr. Sigurgeir H. Bjarnason, in Iceland