I made the adjustments needed (bolt diameter and possibly drilling the mounting hole - I don't recall exactly) to get a no-play, metal-to-metal connection at both ends. Of course, I have also found that I never actually adjust the thing. Once I got the rig tracking straight, I have never has cause to want to readjust it. Maybe a long ride on interstate highways might prompt me to do it.
Back when I was restoring the Terraplane and fabricating the bike mounting subframe (during the 'scope creep' phase, which fortunately gave way to the 'I have to limit scope and just get this thing done' phase) I considered using a power tilt/trim setup from a marine sterndrive. The hydraulic cylinders are a pretty good match for the twist trim, and the 12V powered pump/valve unit would fit behind the Terraplane seat. Glad I didn't do it. Would have been a complete waste of time.
Glad to know there are still a few useable twist trims out there in garages. I agree, getting these parts into the hands of folks who need them is a valuable part of this online community.