I replaced the carb on the wife’s 400 and it requires me to use the choke to get any rpm out of it. Idles a little high and if I give some throttle it dies unless I use the choke. Then it runs good with choke pulled. Any adjustment I can do? I think I can get the idle down maybe with cable adjusting [tried the thumb screw @ bottom of carb] but it’s the use of choke that has me baffled.