Beretta Gel Pads are quite different than Beretta Microcore pads...way heavier and not as soft in my experience.
And the summary of the cause of Beretta Microcore pad failure issues copied from another forum:
."call Beretta." So I did. Here is a summary of what warranty and service told me:
1. They get 3-5 calls a week during bird season on this issue. I think he said week, maybe it was month. But he stated directly that they get "lots" of calls all year long. So much so that they wrote an article on the issue.
2. Rubber surfaces on your A400, and any Beretta per his note, will 100% fail if in contact with any acidic solvent. His examples include, mosquito spray, sunblock, and gun cleaners like Hoppes #9.
3. Always wipe down your rubber surfaces ASAP with soapy water, Dawn to be specific, if in contact with an acidic solvent."