In general I agree with the comments about parallel between the drag link, tie rod and panhard bar, verticle and horizontal. One word of caution is that that would be with the front end fully loaded weight wise, not in the current "stripped down" condition. Obviously the panhard will flatten out when the frame comes down on the suspension. That's also the best time to adjust it's length, not when it's unloaded.

I see your backing plates are fairly well exposed, but can't tell from your pick how wide your rims are. If you've got the requisite king pin inclination at 6 or 7 degrees as Jay mentioned you may be getting some induced steering by too much positive offset on the wheels.