Has anyone tried the 2mm chassis,I race on a parking lot track with inconstant track conditions(week to week)I run 2 cars,one with the stock chassis and another with a BMI 3mm chassis,the stock chassis car works alot better in the conditions that I'm racing under than what the BMI car does.The Question that I had was on the tweak,if you run the 2mm chassis are you checking the tweak every run and if you are,is it tweaked?I know Hara used this chassis at the Nats. and it seemed to work quite well.