1. Feeder Glass too cold   1. Feeder Adjust the glass temperature    2. Machine Setup and Operation Plunger contact time too long Finish equipment running too cold Incorrect adjustment of plunger mechanism height (too low-too-High) Mold is closing too late Bad end of stroke cushioning to invert mechanism on blow mold side Take-out tongs are out of line Take-out tongs are set too high Take-out tongs are closing too hard Blow head or internal cooling nozzle out of line Neck ring is opening too fast   2. Machine Setup and Operation Shorten plunger contact time Use a smaller neck ring Adjust plunger mechanism height Adjust mold to close earlier Improve cushioning of transfer on blow mold side Realign take-out tongs Lower take-out tongs Slow down the action of take-out tongs Realign blow head and cooling tube Reduce speed of neck ring opening 3. Mold Equipment Bad match between blank and ring 3. Mold Equipment Check the blank mold and neck ring match with the mold gauge   4. Stacking Equipment Careless handling of cold ware   4. Stacking Equipment Check setting and operation of push bar and tong heads on the stacker   5. Inspection Equipment Faulty gauging heads Incorrectly set gauging heads 5. Inspection Equipment Change the gauging heads Reset the gauging heads