It's OK them being in series like that, but you didn't mention where are you wiring them to. Is it directly to the PP without a breakout board? If so then I think that the PP inputs are being pulled down normally anyway, so you'll need to connect the other side to 5VDC instead of the COM (which I assume is GND in your schematic)
Didn't make them. But I am being pushed so decided to start making them. I will have to find some time to design the mould and then make it. I cannot guarantee time frames though as I am very busy. May be by the end of this year.
Sorry for it taking this long. I will post an update
That's an interesting controller. I was not aware of it. Will be interesting to see how it works for you. Found the introductory thread for this controller and your last question is back from May and was not addressed, which makes me wonder if they still work on it and all issues have been sorted.
Thanks for the doc. The Ultra 5000 has a somewhat different tuning screen, but I think I can try implementing some of the recommendations, like the scope setup. Wonder if they could provide a similar doc for the 5000 if I asked.
I emailed you the plugin. Please let know how it works for you.