If you have stopped shrinking tape-fasteners-zippers on a garment or a bag, don’t hurry to the shop to change it – but this work is more expensive of a product. Apparently, all problems – in the castle: erased or dispersed back part of his upper and lower cheeks or side walls. Try narrow pliers (or strong tweezers to carefully and gently squeeze the cheeks of the castle in the back and sides of the cheeks at the sides. After this simple operation the operability of the lock fastener is restored.
IVANOV