which coupler?

FWIW, (and yours or others' mileage may vary) but I had trouble with the Firm Feel style adapter in the first picture. The splines were too loose for my taste at the box. They sent me a second one to try but it had the same issue. Ultimately, the refunded my money. I ended up lengthening my steering shaft and using a stock manual coupler - zero play. I'll probably switch to a Flaming River or similar in the future.

Not saying you or anyone else will have issues with the Firm Feel - that was just my experience - just throwing it out for consideration.

[ame]https://youtu.be/QqkIJlxkEKg[/ame]