Sarah, that is something you have to deal with the lav gene. It doesn't matter what you breed them to or where you get them, it is a mutation that causes plumage problems. I think more folks will realize this when they start their own crosses. I agree that rebreeding them to black may help, but it does not eliminate it. At least that's what I am finding and we've recrossed several times, to several black lines and plan to do it again this year. I am also noticing the ones I am working with that have more English crossed in are worse due to the softer plumage seems to break easier. My understanding is this mutation is why the birds with lav/lav did not do well in the wild and died off. In captivity, I think we can work with lav with much more focus to try to continue to improve it and beat the odds of the gene. I wish everyone success, regardless of how they intend to breed them or what their end goals are. It's great to see so much activity and passion around working on them.