When I bought my zed new, all was good.
2 yrs later and the gas struts failed almost decapitated me on loading the boot.
Nissan replacement under warranty looked thicker than the original ones.
Now 10 yrs with the new struts and they are starting to lose strength in winter.
However, the boot started to need double clicking to open after about yr 4 or 5 of ownership despite struts being good.
Then, double clicking didn't work and I needed to click with one hand and lift with the other.
Tried this link
https://youtu.be/e4fkqew1828
Perfect.......even has a link to the perfect rubber washers on Amazon.
A year or so later......back to square one
Now I just live with it.
It's no biggy to me.
Kinda like being married to a fantastic fit wife for 12 years who lets one rip infront of you.
Yeah......on a first date you'd be like WHOA....WTF!
After 12 yrs you'd be like "NO WORRIES, IT'S ALL GOOD"