Hi all and a Merry Christmas!
Unfortunately the balance issue (which I've addressed before in another thread) turned out to be a fairly major problem for me too, and its something I didn't get used to over the course of 2 years. I've always played very well balanced basses before, and the initial balance did seem peculiar; however I did think at first that I could live with it. Unfortunately I was wrong. I do have back and neck problems anyway (mechanical back problem and cervical spondylosis)which mean that any vaguely uncomfortable bass becomes a bit of a nightmare at the best of times, but over time I just found the SC impossible, and eventually had to give up playing it standing up altogether. If you wear it high it does alleviate the problem somewhat, but unfortunately that was out of the question for me because wearing it there severely aggravated my upper back problems. It was a real shame because in all other ways I loved the bass, but upon custom ordering another bass I sold the SC on e-bay. Ironically the guy who bought it found it so uncomfortable that he sold it on within the week! As has been stated, the way you play will have a great bearing on this problem, and it will bother some people more than others according to their style and physique. The only thing I could suggest is to consider having something made similar to the extension on the Bolin bass, which could attach to the place where the strap button is currently, but which extends out to give a different strap attachment position. This may be a little extreme though; I guess it depends how much you like the bass! Otherwise its just simple physics I'm afraid, and it's either learn to live with it or move on. I don't personally feel its a design fault; its just that balance in this instance was probably considered secondary to aesthetics.