One blank-corner is damaged when touching the inner catch rail.

The damaged/bended corner is touching first the inner catch rail.

The inner catch rail looks like a hook and will be found underneath the lower rollformer shaft on the catch station.

By changing the horizontal level of the catch channel slightly, the roll-forming direction of the tin plate will be changed/affected, and the whole tin plate edge should touch the catch rail equally.

1. Measure the inner left and right distance between the hard-chromed guidance channel and internal hard-chromed guide-shell (around lower rollformer shaft). The left/right measures are most probably not equal.
2. Try to correct one of the distance until both measures are equal. If you are not sure how to correct, feel free to contact us via the online support system.