I regularly open the tailgate every Sunday when I visit my mother. Last Sunday it was nice, today it's HARD. This tells me that the lift strut (one or both) has failed. I bought on 09/25/2020. Installed on 09/28/2020. Outage April 2, 2021. It's been 6 months and 3 days. Oil is leaking heavily from one of the posts, and the oil has spilled, running down the paint and collecting dust. Just to be honest with no emotions this set of jack stands lasted 6 months. I will not buy this brand again.