Hi can anyone help me. I have a 2008 sinnis apache and i have a problem with the choke. When i turn the bike on and its cold i put the choke on. But when i put the choke on the bike automatically revs to roughly 4000rpm. I no rocket scientist but i am sure thats no good for a cold engine. I then try turning of the choke and then the revs go right down and it wants to cut out until its warm. can anyone please help me thanks a lot.