I also voted for this, I've been running my 416WE at 1350g since it was built a month or so ago... and it is soo much better to drive. The cars actually respond better on track, and yes, are a little quicker too. Not had any issues with traction roll either.
As for the car, and how to get it balanced, well... have a look here
Balancing a 416. I've only had to add 20g to the car, and on the tweak board the other night, all the car required was a quater turn on the RR shock to get it balanced... would exactly say thats miles out
Ed