So i have a 2004 Polaris sportsman 700 twin

1. The bike only runs with the choke half way out and fully choked i can run the bike fine nothing wrong, my question is, does it have something to do with the new carb i just installed on it would I have to adjust the fuel adjuster on the bottom? the only way to adjust it is taking it out. (damn Polaris and the way they put the bikes together lol)

2. AWD doesn’t seem to engage I read the manual and it says it engages under 3100 RPM and i was under 3.1k and i was on sugar sand and it didn’t want to engage all that happened was the back tires kept spinning

any replies would be greatly appreciated 🙂