***ERROR: gd:extendedProperty count limit exceeded: 10

Apparently there is a limit on the number of exteneded properties allowed by the Google Contacts Data API, so I can only sync 10 of the following:

• First name
• Last name
• Nickname
• Preferred e-mail format
• Allow remote content
• Homepage
• Work website
• Department
• Custom1
• Custom2
• Custom3
• Custom4

The obvious solution would be to skip two of these.  If I had to choose, First and Last name probably aren’t too important as Display Name is synced, or Custom3 and Custom4 since they possibly aren’t used as often.  One alternative solution would be combining Custom1 – Custom4 into one value split by newlines.  Any other ideas?