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Kevin Federline spent nearly six hours at Britney's new Calabasas mansion on Sunday, and a source tells X17online exclusively that Jamie Spears arranged the entire thing! During the pow wow, Jamie, K-Fed and Britney sat down and discussed how Brit's upcoming world tour will affect her spending time with Sean Preston and Jayden James.

When Brit was overseas late last year, she got a taste of being on the road and she really missed her boys - as you may recall, just hours after she got back from Japan, the boys were dropped off at her Summit home. Her and K-Fed are now working together to make sure she doesn't have to go without seeing her sons for long periods of time as she tries to balance her comeback career with motherhood.

So will K-Fed travel with the boys and meet Brit on the road? Will he allow her more time to visit with them when she's back on her home turf? Whatever the solution ends up being, it sounds like both parents will be spending more time together, and Sean Preston and Jayden can only benefit from this...