radiator leak

hey guys. well here is what i got to do when i got home from a carshow today. yesterday i noticed at a friends house, that my radiator was leaking. not bad, but seeping from the top tank down the fins. by the time i got home it had stopped. so today i went to a carshow as planned, and it didnt leak at all. but since i just had it recored less than a year ago, im going to take it back to the shop and tell them it needs to be fixed. im just worried its going to happen again. hopefully they will make it right.