Although one spring assembly went into place reasonably easily the other did not. Using a pair of long nosed pliers to compress the is NOT a good idea. If you slip you stand a good chance of trapping your finger between the jaws. I found a small rectangular plate (10cm * 2cm) with a cutout in the end just large enough with a bit of filing to fit round the set screw. Using this to either push down on the washer or fitted round the spring just below the washer is much easier and safer.