Google Contacts: Missing Contacts

[Sam King]

I'm using Gnome Do 0.8.5 on Ubuntu 12.04.

When I use the Google Contacts plugin, it gets most of the contacts, but it's missing many. There should be 720 contacts; it's only getting 623 of them. I haven't been able to identify any common characteristic of them -- it misses some with Google+ accounts and some without; it misses some with phone numbers and some without; it misses contacts through the alphabet; etc. Also, for some contacts, it is missing some information. For instance, on one contact, it got their @yahoo email, but not their @gmail email.

I'm a programmer, so if someone can point me in the right direction, I would be happy to help out with a fix!
-Sam