This limitation is expected to be addressed in the next version of VeraCrypt. The correction is quiet easy actually and a patch for it has been available for almost 2 years but it needs more testing under Maverick before being released.
We are also looking into another issue under MacOSX (copy-past of passwords) and we are compiling beta versions for that. So, if you are interested, I can provide you a beta version that supports large sector sizes so that you do tests in your side. And if you are under Maverick, we'll be very glad to have your feedback.