I've been hooking up r/c obs since 1976 and have never even thought about "Steering Geometry." I use solid rod connections. I use the second hole out in the servo arm and the last hole out in the K&B arm. It's worked for me and unless I over turn the servo and stall it I don't hear any "crunching."

Check out the steering installation on the TS2 by going to aquacraftmodels.com and clicking on manuals. Click on the TS2 manual and page through it till it shows how to hook up the steering.

JD