Anyone else having seriously shitty results with first response?? I've gotten 4 very faint positives with first signal, and a handful of faint positives with my easy@home cheapies...took a first response early result this morning, fully expecting a beautiful line, and....nothing. Not even an indent of evap. Completely stark white. Took another cheapie a few minutes ago and got a faint line, even with diluted urine. Wtf??