1. Feeder Glass too hot/cold 1. Feeder Obtain correct gob temperature 2. Machine Set-up Incorrect blank/mould time Incorrect Press time ( P&B only ) Mould temperature wrong Incorrect Take-Out action 2. Machine Set-up Adequate mould/blank time Adjust Press time ( P&B only ) Adjust Vertiflow timing Adjust Take-Out action 3. Mould Equipment Mould shape problem 3. Mould Equipment Inspect offending Mould against drawing