Contoured vs regular cups

[Rebeyd]

Anyone else find that the contoured cups don't hold suction well? I got the regular ones initially and never had any issues with losing suction. Then I got the contoured airlock cups when I went up a size and they don't keep suction for long at apl. Maybe a few minutes

 

[Tina A]

Check the air locks. (Noogleberry ?)They may need to be tightened. Add sealant tape and reinstall for best result. Not the first time I’ve heard this, years back mine did the same thing when I got them. Contour had no bearing on holding air.