Trying to remember some things, get my rhythm back. Cast up a pot full tonight. Haven't looked through for rejects yet but I did notice there was a small period there where this was happening. I adjusted a couple things, as in waited a little longer before opening the sprue plate, Waited a bit longer to let the mold cool a tad and adjusted temp of pot a bit and it seemed to clear up. Was using a Lee 6 cav SWC mold. was running about 700-720 usually but adjusted both ways a few times.