SMOKING RIVETS!: New stuff learned at maintenance day!

Maintenance day at our flying club is also a learning experience, usually a good/fun one! 'Twas this past weekend. some things I learned:

• "Smoking rivets" - nope, not one of Batman's sidekick's phrases (!), but a condition where rivets are too loose, and they wiggle and rub in their slots a bit (e.g. under the wing), and create aluminum powder/dust that leaves a smoke-like trail. Not good - should replace bolts that are doing this.
• How to take apart the taxi and landing light units on a 1970s Cessna 182 Skylane, and put new gaskets in.
• That the backseat of a C182 mid 70s era is bolted in with 7/16th size bolts! (And it is a bear to undo 'em, and you have to jiggle/wiggle the rug under the seat and line up or create holes for the bolts).