My understanding of Rics is growing all the time. Although made by CTS, Ric pots have special Ric part numbers on, not standard CTS ones. So whilst he may have had pots fitted that had the code that Ric say indicated 330k, in reality the actual pot value, if measured, would probably have been in the 460k-490k range.

Most pots have a ±20% tolerance, so 330k could be in theory be anywhere between 264k to 396k, though most pots do read very close to the nominal value. But even 396k is still a long way from the 490k that people have measured on the '330k' pots. Without having his actual bass to measure the values from, we'll never know.