I've become leery of basses with upper horns that don't extend to the 12th fret or beyond. If it only reaches let's say the 13th or 14th fret, that usually puts too much of the instrument's weight on the neck side of the strap button and neck dive is pretty much guaranteed there.
I think the materials and craftsmanship of Warwick basses are great, but I had a really nice German built Corvette that taught me the lesson of the short upper horn many years ago. When I talked with my luthier about maybe building some sort of prosthetic extension for that upper horn to get the balance under control, he just offered that maybe it was time to shop for a different bass... I did that.
A standard (not compact) Jazz or Precision style body usually has enough of that upper horn extension for decent balance, but I have a parts bass with a Warmoth Jazz neck that's rather heavy - it has steel rods to reinforce it instead of lighter graphite rods. It's a rock solid neck, but it's a little beefy. While it doesn't make for serious neck dive like that Corvette from back in the day, it doesn't quite sit upright as naturally as a similar bass with a lighter neck. It also doesn't bother me too much because it plays easy enough (low action!!) and sounds great.
I'm not in a hurry to take that bass apart, but if I do in the near future, I'll weigh the neck and check back here. I should also note that I have traditional tuners (Gotoh?) on that Jazz, but I might eventually swap them out for some lighter options. That's probably all that this bass needs to balance exactly right.