I’m not sure how much they actively do in base as PD has been producing their canopies for a while, and I don’t imagine there are many new aces or blackjacks getting produced these days. What are you looking for help with?
They are around, it's just really slow. We've ordered a couple of items from them recently (line kits, lower control lines) that have taken a very long time for delivery. (Over one month is all I can confirm from memory.)
But it's actually not that important if you are using the (fairly shallow) factory brake settings, anyway. Just don't make them any deeper than the factory (and they'll get shallower with stretch). Toggles on the factory lowers are user-configured (backstop knot, no sewn loop from the factory), so you're going to be establishing that on test jumps anyway.
Plus, if you build your own, you can use the Simon Perriard's (newer) loop style brake settings, so you won't need to replace them again (probably ever).
When I ordered a new blackjack last year it did take a few weeks of calling and emailing before they responded. Turns out they were actually on vacation. I received quick service once they were available.