You might want to consider re-jetting the bike. Do a search on this site and you will find more info than you thought possible.
Put a new spark plug in first though and see.
As mentioned above I also have had some trouble with the kill switch or so I thought until I got the jetting right.
K
__________________
08 TXT 300 
06 Gasgas EC200
03 Gasgas EC300
05 Pampera 250
|