Instead of continually handing you information, where you don't learn to do for yourself, I'd like to point you to this link:
Alternate Search for T4R - 3rd Gen Section
It's a search for this forum, using Googles cache results (and thus the Google search vs the forum search). Hopefully you can get into the habit of using that search first, then ask questions. At least try to help yourself before asking others to help you... sorta how you could have 100% resolved that squeaky clutch by spending the couple minutes it took you to just take a look at it yourself.
You aren't even Close to the first person to do this (rip apart the seat mounting bolts), many have gone before you. There are 2 common solutions, I'll leave it to you to find out what those 2 common solutions are and decide between them. Heck, I think you'll find it common among all brands of vehicle, especially as they age.
Just as a bit of secondary information, bolts/fasteners tend to have a 10% safety margin for error. So, 27ft/lb would be fine to about 30 or so before beginning their failure. Unless the fastener was Completely rusted, it also wouldn't have gone from fine to failed without indication, which means that you missed the clues it offered you. Usually, when a fastener is about to shear, it suddenly "feels" different through the wrench... I'd describe it as going soft, but thinking about what happens is that as the metal deforms it requires less force to continue to deform so it'd feel like it's getting easier to turn. You can STOP when that happens and sometimes still back it out for replacement, but usually it's too late. Same happens when shearing the sheet metal, like the part that fell into the rail. These are Learned things, so don't let this opportunity pass by without really thinking about what you Felt. Good to learn not to trust torque wrenches too much too, beyond the human error aspect, they can fall out of adjustment and simply fail internally... best solution is to wrench enough that you develop a feel for what should be "about right" so when something goes beyond that you can test it.
I'd also like to point out, this could be totally NOT your fault. Someone else before you could have over-torqued that bolt, just to the point of failure and STOPPED because they felt it failing, leaving you the mess.
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'99 Limited 4x4, Millenium Silver ~
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