rotorgoat8:
Just a note of caution here--I've seen the '57 roll into some aggressive (up to 45*) banks to stay on the ground track in a hold. WATCH your airspeed as the AT's struggle to keep up in this situation.
That sounds like a malfunction. The design specs call for a 30-degree bank limit (or 25 degrees with some airframes) for autoflight. The nav logic is supposed to be to accept the deviation from track at 30 degrees of bank and keep changing the course to get back on track.