Yes I had to add ballast as it was too light. I added 20g under the rear bone, next to the motor, and 2x5g in front of the slipper.
I am still working on dampers. I found 3x1.5 and 3x1.6 tapered had too little pack for indoor tracks (it should be perfect on dirt though), next time I will try Kyosho 2x1.6 (32.5WT) front and 2x1.7 (27.5WT) rear. They seem to give lots of pack, good for optimistic jumps
Have you received yours Chrissy? Please post some pics ansd thoughs here!