Maralise perhaps you should take a spanner and tighten the nut next time you climb the route or at least have the decency to reply to Gareth's question. Perhaps you could have tightened it by hand for now.
I will only be out there again in mid December with a drill so if the bolt itself is loose then I'll place a new one.
If it is just the nut that needs tightning then any one with a #17 spanner can do it.
A #17 spanner on a sport rack, like a nut tool on a trad rack, should never feel out of place.