The K-7 memory card removal is the same - I 'ping' mine: as someone else up thread said, press it fully in and let go quickly and it pops up a little further.
I too loved the little toggle thing you had to turn to open the card door on the K10 too. Progress eh?
Oh yeah, SR. I have a Tamron zoom. I tend to use it nearer the longer end if I use it at all, so I set SR to 180 (I think - is that an option? Not used it for ages. I go for a bit less than the max focal length anyway) The switch for SR on the K10 was also useful