How to split buyers agent commission with homebuyer?

[Michael Sylver]

We're looking to buy a home in our same community.  Its a new construction, we've already worked with the builders agent as that is who we bought our previous home from.  The community mandates the builder pay a 6% agent fee.  The builders agent cannot represent us.  So if we bring our own agent, we'd like for our agent to take 1% free then we get 2% fee off the price of the home.  Essentially our agent is getting 1% to handle the transaction.

Can anybody suggest a method to do this?  We're in the state of TN if that's relevant.