OK, this is my first Mac and I love it! I just need a few things cleared up; 1) I charge my battery and it hangs at 99% and then says full when it isn't (I check with coconut battery) 2) I've only had this Mac for 5 days and it's battery "health" is around 95-96%. Normal? 3) The three finger gesture to scroll down to the end of the page or top works sporadically. Any fix? Thanks so much for your time!