1. Feeder Uneven gob temperature Gob too long   1. Feeder Adjust forehearth temperature so that gob does not curl Shorten the gob   2. Machine Setup and Operation Glass is improperly loaded (off center) Blank mold not properly swabbed Final blow takes place too late, allowing excessive run of parison Blank mold too hot   2. Machine Setup and Operation Adjust deflector to center of blank-check size of deflector Swab blanks more frequently Advance final blow Adjust blank cooling   3. Mold Equipment Incorrect blank design Funnel size incorrect   3. Mold Equipment Check for correct blank design Check funnel size