I'm going to take your advice and clean and lube the qr levers right now, Jur. Actually I've replaced the front q/r with a bolt (stopped the squeaking), and since I rarely fold the bike I might do the same for the seat tube qr's. I could still loosen them and fold the bike using an allen wrench which is no big deal. As for easing the bike over bumps I thought that was instinctive, that everyone did it, but then I've been riding since I was a little child and it's all automatic for me.