I bought the
Poison Spyder ones off of Amazon, the price was right. Only con (if you see it as a con) is that they need to be painted before install. It said 14 left in stock a couple days ago when I ordered but now it says only two left, so you might want to jump on it if you're set on them.
I actually googled it too when my seat belt wouldn't come down, and I thought I was being dumb too with not holding it level, but turn out mine was too gunked up anyways.
Other people have said that it's the powder coat that causes the pin not to fit, which I can definetly see as I could almost get mine in with a hammer. I have no doubt that a bit of sand paper wrapped around a pencil will get rid of the issue.