I went into Action Bikes at lunchtime today to buy a new seatpost. My seatpost is one of the few remaining items from my original Raleigh something.
I've found the seat angle keeps slipping backwards regardless of how tight I fasten it (see my vasectomy thread )
The young fixit chap took my seatpost out to make sure the one he was selling me was the right size. This was good. (Although better would have been to put a vernier caliper around mine and measure it)
he then puts my seatpost back and on tightening the seat pin - SNAPS IT!
Inserts new free seatpin of course, but its an indication of the chaps lack of "feel" for threads, he just heaves as hard as he can on every nut and bolt he comes across.
Another reason for home maintenance and servicing.