I have a favourite day pack that I have been using for many years. Still in good condition and comfy. Unfortunately one by one the zips have lost the pull tags untill today the main compartment zip tag also parted company with the slider. The slider is still there but the metal loop that holds the puller to the slider has snapped off so I can no longer attach a replacement puller to the slider. Short of replacing the whole zip, is there a solution out there? I realy don't want to throw this lovely bag away. I can't really afford to replace it and it's not made anymore anyway. I love this bag and would love to keep using it but the zips are now very hard to operate without the pullers. Any ideas greatfuly received.