Toilet Seat Cover Won't Stay Up

Toilet Seat Cover Won't Stay Up. Coupled with unfortunate timing, a toilet seat that won’t stay up often causes a mess as well—and that, in turn, can cause friction between members of the household. The seat on my toilet was falling because it was just shy of being perfectly vertical.

Mainstays Performance Bath Toilet Seat Cover, 1 Each ...
Mainstays Performance Bath Toilet Seat Cover, 1 Each ... from i5.walmartimages.com
The counter above the bowl comes out too far and the seat can't tilt back enough to stay up. Install the rubber bushing with the tapered side facing up toward the toilet seat. What happens if you drop your toilet seat?

Then use the tightening tool from the kit to snug up the nut.

As i said before i could see the metal pin that ran through the seat and cover hinge. What should i do if my toilet seat wont stay up? What do i need to soft close toilet seat? When i lift the toilet seat and lid up, the seat will sometimes gradually fall back down, as it doesn't seem to lift to a >90 degree angle.