Not that I've seen
I have a 361 not a 373 and while you may hear from other 373 owners about this the 373s I've seen or sailed do not share the same issue. Even with your water and fuel tanks full I wouldn't expect it to be off her lines that much. Has this been a problem since she was new? Have you added anything heavy like davits, a generator, etc? I have seen a 351 that sits well down in the stern when the dinghy is on the davits. Have you talked to the dealer about it?