You are right, that does look good in pictures and right again, the seat must go back to the Lincoln or whatever they came out of.
Welcome to the forum and can I offer a suggestion? Start and maintain one thread on this and the other jeeps you have or will have. Keep it up to date. That way you're not chasing your threads all over the place hoping to find your responses. Just a thought.
Squirrelly steering? Look for extended front shackles, loose ubolts on the axle and clunky worn joints like others have said. Every little worn part adds up to one big worn part.