I don't know about a balance issue, mine will track dead straight with hands off the bars from speed all the way down to a crawl. That said, stop and go traffic can make any good rider wobble when the bike's neck angle is over 30° because you keep losing your inertia and the "friction zone" is the only remedy.

A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. Herm Albright (1876 - 1944)