low speed wobble

[barend]

It's back! I installed the heavy brace which reduced the wobble, changed the front tire and it was basically gone Except for one small instance where I felt it ever so lightly.

Now it's back. I've made some adjustments on the sidecar and need to correct the tracking but other then that No changes were made structurally. While out riding yesterday i had the great idea to give a quick tug on the handlebar, which immediately set off a brief wobble, but it also felt like there was a click when I tugged. Probably should have tugged on the right side too to see if the result was the same but didn't. Steering head??