I have an 06-900 and replaced the fuel line because it would bog really bad broght it to the dealer and he found the line had fallen apart in the tank so brought it home and had to wait for snow finally got some and took it for a ride had to pull it like 5 times to get it started cold(let it warm up to 100 deg ) went for the ride rode it a few minutes and the bog is back not as bad but it won't pull anymore than 6000 rpms so turned it off let it cool down a bit and tried to start it and it took 8 pulls to start and sled still bogs anyone have any Ideas what would cause this