No, I don’t have the ADU hinge pin blocks. I wanted to buy them, but I also saw on the forum that the installation isn’t great. I think I’ll wait for Tekno to release a 5 mm aluminum version, or for ADU to fix the issue.
Anyway, there’s so much snow right now that I can’t run the car, so I’m going to wait a bit.
For the pinions, I’ll install the 14T using the 15T holes then (is that what you did?).
As for standing backflips, I don’t know — it slips too much with the snow

But I think I’ll stay on 4S because on 6S I’m afraid of breaking the drivetrain, and since I have to order parts from the USA because they’re often out of stock in Quebec, it’s a 3-week delay every time — and the nice season is short here

)