Hase anyone ever tried these kits.
http://cgi.ebay.com/ebaymotors/ws/eBayI ... MEWAX%3AIT" onclick="window.open(this.href);return false;

>>> The stock carburetor from the factory is designed for economy and minimal exhaust emissions ... not performance. <<<

I disagree.
The bike is tuned to a certain air / fuel mixture and changing jets is only any good if the engine air box or exhaust is changed ... even then your only going up one size maximum.
The rest is on the needles and then you could wet 'n' dry the needle washer.