That is kind of strange. I drip 5-7 drops in my 510 and it doesn't flood but some of my other 510 atomizers do. I am thinking it may just be that particular atomizer like CaptJay said. I have two 510 attys that flood if I put more than two. I hate to say this but a lot of 510 atomizers are inconsistant in manufacturing standards. Some of my bridges are very high, some sit low. Some have tons of the wicking material and some actually arrive with none at all. And these were from the same company. Does your atomizer act like it's overfilled when you take a draw on it? (does it make a gurgling noise?)