Well, this is a head scratcher....

[alpacasandchicks78]

Recessive white wouldn't have leakage.
RW stops every and all colors from showing up. Sure you might get a fluck with one colored feather like your prior rooster but you're describing your current bird as having many gray spots. That not something that happens with RW.
It is exactly what happens with splash birds. One blue gene dilutes black to blue. Two blue genes dilutes black to blue then dilutes blue one more time.
The white looking areas are were the color is almost diluted to nonexistent. The gray spots are were it was diluted to blue and then again but maintained a bit of color.
To blue can produce splash. There isn't a white crested white so....
Breed that pullet to a white crested blue male and I'd bet you get some white crested blue chicks and also more chicks like that pullet.

Okay, that totally makes sense now. Our roo is a golden laced that is about 18 months old. We don't plan on breeding. Thanks!!