Reading the reviews, I see two common themes: 1) These adaptors tend to lose their strength in pushing the blade forward after a couple shaves 2) Each new package of blades should include at MINIMUM two adaptors.
I have been a customer for well over 15 years now and the one weak link is these adapters. HeadBlade team has the opportunity to do right by taking action on these customers reviews and pivoting to add more into each pack of blades. These things cannot cost more than 5 cents. I also used to talk to the HeadBlade team and they would happily throw a bunch in the mail for me at no cost.
HEADBLADE TEAM: PLEASE PLEASE read this and consider a change for your loyal customers benefit. We trust you have heard this over and over too and realize it is a clear pain point for many of us. Thank you!!!
Derek