[quote name='OldGit' post='370093' date='Jan 4 2009, 05:06 PM']No your knobs should be flat tops not domed.[/quote]
Simon - Confusingly, there appear to be two different types of knob fitted to the 57's featured on the 21frets.com JV Precision page - both flat-topped and rounded. The ones fitted to my bass are the rounded type, and were on there when I bought it. Unfortunately, I can't be any more certain of their provenance than that, so I really shouldn't speculate further.
It's a great bass that I hope will go to a player who enjoys playing it.