I love these 306 stingray attys. There are 306 and 510 stingray attys, available in SR and LR. The flavor I get from them is excellent, especially the 306. Lately I have been having some trouble when dripping, the drop sits on top and won't soak in, and I end up having to put the drip tip on and take a dry pull to get it to soak in. Sometimes I have to do this with each drop. Anyone else experience anything like this? Why won't it soak in? I know its dry, but its like it forms a little bubble on top. Weird...