Correct with plier. Bend lower arm distally. Adjustments to the mandibular arms are usually made with heavy duty small beak three prong pliers. Lower arm bent distally D. Evaluating and Adjusting Lower Lingual Arch, if present. Lingual arch correct width in posterior.
Lingual arch rests on cingulums of lower incisors.
If a lower lingual arch is present , check that the lingual arch is the correct width and is not expansive, nor narrowing to the lower molars. The lingual arch should rest on the cingulums of the lower incisors. If a lingual arch was not requested and is desired, you can make one in the office using your work model. Form, adjust, solder. This can also be done right before delivery if you prefer to check the lingual arch form in the patient's mouth before soldering it to the lower crowns.