2000 Ford Taurus front end wobble

There is a wobble that seems more noticeable sometimes, sometimes not. Like a wheel not properly balanced, although it happens at low speeds and I'm assuming a balance prob would manifest more noticeably at higher rpms. It stays consistent in how I can hear/feel it throughout acceleration, but the frequency increases with acceleration. With front end of the ground, wheels fully tightened, there is no slop when the wheel is push/pulled (12 & 6) that might indicate a faulty wheel bearing. (Tried all angles) With wheels removed, didn't see anything out of place/damaged, no slop in tie rods, calipers, half-shafts. Recently replaced brake pads and had rotors machined (wobble was present prior to brake job). Perhaps - but not sure - wobble is more noticeable when turning left from a stop and accelerating. Cannot manipulate wobble at all when driving and turning back and forth (trying to see if one way is worse), seems to stay the same.