Originally Posted by CaseyP

Interesting.....

Most people don't run the bottom lean enough and then are backwards on the top to compensate.

I run the 6mm venturi in buggy(most of the time) and 7-7.5 in truggy.

For buggy all this year I have switched to the 9901 with the 41021 with great results you will loose a little top but gain huge run time. For the Losi car the steel flywheel 2 alum with gold and 2 carbon shoes with green springs. For Truggy I still run the 9853 with 41021. At my local track which is descent size I can go 12 plus in buggy and 13 plus in truggy with these set ups and they have plenty of power.