I can see your problem, for a quick fix, please edit the file site.js found at themes/circleflip/js/site.js
and find the line
scrollTop: target.offset().top – 150
change 150 to 80, making the code now
scrollTop: target.offset().top – 80
However, this will not fix the first click problem, it will make it perfect for all click after the first one.
I will check this for you and get back to you with an update.