Bob, high density but lacking in color implies to me silver retention.

This would mean that the problem is with the blix. Film blixes are notoriously hard to formulate and this is why neither Agfa, Fuji nor Kodak recommend them.

You can try reblixing or you can get a 1 gal bleach and fix kit of any other brand and redo the tail end. Don't forget the stabilzer. If that does not help, then there is something else quite subtle going on.

BTW, have you scanned in color negs processed by a lab with your scanner? Some scanners do not do a very good job handeling color negs from any source. You may want to make a reference scan for future use.