Duplicate Gmail contacts


I've noticed some minor issues with my contact list. First, I see that if I look at my contacts on the Google website on my PC, I have several contacts that are duplicated. What's odd is that on 1 of them their phone number is similar to xxx-xxx-xxxx and on the other one, it is xxxxxxxxx (notice that there's no dashes in the 2nd one).

The other issue, and I think its related, is that if I edit a contact on my phone, a menu pops up that asks me which one I want to edit. They both say "Google" on the person's account, so it must be pulling both of them in.

How can I clean this up? Should I just fix them up on my Gmail account online and then let the sync handle it?

Not a big deal, just something I've noticed and thought I'd ask.