My riding buddy and I are going riding tomorrow and we've been working on his bike all night trying to get it in tip top shape. Well, we decided to replace the coolant. So I took the bottom bolt out of the water pump, drained the coolant, replaced the bolt, then added new coolant. I wasn't paying much attention to if it was leaking before or not, but I tipped the bike sideways to get the coolant in the left side radiator as well, then when I returned to the right side, I found coolant dripped out of a weep hole on the bottom of the water pump. What's the deal and how do I fix it???