Polaris ATV Legend
Join Date: Feb 2009
Location: Washington State
i would guess that would be your problem right there, it not wanting to run cold with the choke on. sounds like your machine is very very lean. and since it is running so lean, it isnt making as much power on the ignition stroke as it should be. depending on your elevation and temperature, and the machine being brand new, it is very possible the jetting it off. its not uncommon to have to make tweaks to jetting once the machine is where it will be ridden.
also, dunno if the dealer told you this, but brand new the 330 engines can be cold-blooded to start up for a while until they break in. once they get some time and miles on them, they run a lot better