I think we ought to assume that the rules as stated
here are indicative of how the variant was meant to be played (it is in it's 4th version, so one assumes it has been adequately balanced)
The strange thing is that this map shows several SCs as being part of a country's empire, but not a home SC (ie. they do not start with a unit there). We are left to assume that they are meant to be neutral SCs and are just confusingly colored.
Therefore, i think the following provinces should be made into neutral SCs: Cal, Chi, Man (all were missed)
Additionally, there are the following other errors:
-Along the Amazon river, there are two provinces named Lor. The green one is supposed to be "AMA"
-Trinidad is meant to be a supply center, not West Indies. Trinidad is also currently labeled "Kre" instead of "Tri"
-The variant rules show that GB is meant to start with Trinidad as an SC, with a fleet there. GB does not start with an army in Toronto
-Just to be exhaustive, the rules on the variant page state that the game is meant to be build-anywhere
It is fully understandable that we may be playing a variant of a variant, and therefore not all of these changes need to be implemented. Perhaps some of the players would like to discuss these, but ultimately it should be up to the discretion of the GM, who passes judgement with the intention of making the game as fair and balanced as possible.
IMHO, i think the game should be fully updated to accommodate these rules