What kind of carpet is it thick office style or more like ozite? What battery are you using a shorty, stick or saddle? I'm not a fan of 6 hole piston's the pro's never use them anymore. I would go with a 4 hole 1.3's all around if you use a shorty if you use a stick or saddle then go 4 hole 1.2's in the rear. I've run on ozite and carpet for years. If its a smaller track the short chassis is better if its a big track plus 8 is better.
Here's my local track on ozite I run the short chassis my 210 is the one that's in the video white, yellow, blue
http://www.youtube.com/watch?v=9g1h8...6BcSLtQUy6fANg