Todd i was wondering if there would be any benefit to removing the choke and either going to some sort of primer kit or just leaving it off. I havent had a look at the carbs yet as mine is brand new, but it is something we do on jet skis, you can remove the choke plate and butterfly and add a little more flow, without adversely affecting the vacuum signal. The primers we use have brass nipples that press in where the choke shaft holes were, one is a plug and the other a spigot feed, for each carb. You splice the t fitting into the fuel line and when youe machine is cold, a couple of pumps of the primer shoot fuel directly in the carbs and the machine fires right up. Thanks.