I thought you might end up with extended warranty. In the end, it is about your comfort zone, and $40 is not that much to pay.
Let us know how your a4l experience goes!
I must confess I am a bit quick to believe there is a defect on a refurbished, but thus far, it always has been user error
(plus one factory reset when remote was not working consistent).
On stand height, it is 9.5" to the lower tweeter and 11.75" to the upper (super?) tweeter from the speaker bass. Measure your ear height (at LP) and subtract maybe 10.5" (split between the two tweeters), and that is the height you should shoot for. I would guess 31" to be closer unless you have the chairs you sink down into.