Re: Question about requeening
Mike cannot help re where to get non treated survivor stock, but to the other part of your question, is it too late.
It might be. What likely happened last year is that mite population built up during summer, then when winter comes and bee population drops there is suddenly a much higher ratio of mites to bees, and the hive dies. It's a common scenario.
It's likely that the exact same scenario is playing out again in your new hives. Mite issues are not yet obvious though because the high bee population means most of the bees are unaffected as yet and healthy. So, let's say, best case, you are able to get queens that are fully mite resistant. The issue would be, even if you got them today, they will go into your hives and not be laying much for at least another week. Add 3 weeks for those bees to start emerging, you have around a month before any of the resistant bees at all will be in the hive. And that's if you started today. Add to that month several more weeks before you get a meaningful percentage of those bees in the hive, it is getting into winter, your chances of averting disaster are there, but are fairly middling. And that is based on best case scenario of getting a totally resistant bee, and doing it today.
A little depressing I know. But on the positive, a queen is what, 20 or 30 bucks? Heck you'd likely spend that in a café without a second thought so why not just go ahead and give it your best shot. If it doesn't work out, you are not much worse off plus will have gained more experience for next year.
While I cannot help you re getting the untreated survivor queens, from hanging around in the forum for a few years I have noticed that buying untreated survivor queens has been virtually impossible for anyone attempting it. However lately Solomon has been saying he is selling queens so may be worth talking to him, he has also said his bees are awesome.
But if that avenue does not work out, Beeweaver will be your best bet. OK, maybe not meet the high standards suggested of local adapted bees or whatever, but if the reality is that the perfect bee is not obtainable, go for second best. As stated, the money, is really neither here nor there.
But in summary, my thoughts on your situation are that the odds of your bees getting through this winter will be a crap shoot, and that will be regardless of what you do. But that doesn't mean you should do nothing, go ahead and do the best you can for them, there's no guarantees but it could move the odds a bit.
"Thinking Inside The Box"