bevel question

how to avoid this inflexions in a bevel along a curve. i have a bezier curve that is a handrail, and i use a bezier circle to bevel along that curve. i get this result - see attached image. how i can avoid these? i want to keep the handrail smooth. thanks for help!a

Attachments


I would subdivide main curve in place of inflexion and adjust rotating and scaling knot handles