BlackBerry :: Gmail Contacts Synchronisation Not Work?

I don't know if it is because I have not got Contacts sync set up properly, or even whether these settings can be tweaked, but the synchronisation between the Contacts list on my BB9900 and Gmail Contacts for addresses (i.e. building addresses) completely screws up the field parsing!

For instance: I enter somebody's address on my BB, making use of the separate Address 1; Address 2; City; County/Region; Postcode; and Country fields as appropriate, then when I check back an hour later, the entire address has been moved into the Address 1 field (with the other fields empty), I presume as a result of Gmail Contacts syncing?

Note: I DO NOT use Google Sync; I just have the Contacts synchronisation option checked in Email Setup for my gmail address. I used to use Google Sync but I recently removed it from my previous handset (9700), as it used to duplicate/triplicate/n-tuplicate my Contacts and Calendar entries! Surely this isn't the way syncing is supposed to work? Is there a way of mapping the fields between BB device and Gmail Contact list, so that this doesn't happen?