I have a Bay70 Hasselblad polarizer that's fitting too loose when screwed onto the lens, meaning it unscrews way to easily where accidental dismount is likely. When I compare it to my other filters, the three tabs on the inside of the filter are not bent, unlike my other filters that fit snugly. I tried to press the tabs, they bent under my finger but when I let go they bent right back to its original position - perfectly horizontal with the filter. So, any advice how to go about bending the tabs permanently or any other tricks? Maybe I'll put the tabs gently in a strong clamp or vice for few days. Thoughts?