This solution comes from the Worlds in Brazil. While looking for a better setup, one of the team drivers installed the front rigid axle using the one way (Kyosho drivers were using locked front diffs). As a result, the shaft adapters broke in the inner end. I have seen the same situation in my track.
The solution they found was to dismantle the front diff and make some holes (not pass thru holes) in the plates using a Dremel, so the balls will settle in those holes and the diff action will stop. This is why the adjuster is not needed anymore. I didn’t see the diff dismantled, so I don’t know how many holes and balls they used. I guess three would be enough. The bad side is the front diff weights considerably more than the locked oneway.
What shaft adapters have you been using D?
I plan give 3Racing's shaft adapters a try to check if they are better quality than Serpent's.
Soo bad that 710's drivetrain metallic parts are so low quality.