Over the past few weeks when I started the bike I noticed some coolant dripping from under the bike. I just traced it down to under the water pump. There seems to be a small hole under the pump where it's coming from. This is a manufactured hole not from damage. I checked all the bolts so they're all good. It seems to happen if it has a hard time starting, I think it stops after that. Is this normal or something to be concern about? The radiator is full to the top but the reserve was a bit low. I just added a bit.