Stockers are good and if you're not ported it's nonsense to swap carbs. If you can't make the stock carbs run clean, what makes you think a new carb you have no experience with at all will fix your issue? They all need to be dialed in regardless of size and brand. Believe it or not, a 2/1 requires a better tuner then if you had the stock dual carbs. They get finicky on the midrange to top end transition and takes a perfect needle and position, otherwise they just feel goofy. Your decisions and money, but I reccomend learning the stickers before spending money. Maybe, just maybe, if you had all the bolt ons, I'd do a set of 28mm PWK's but that's after everything you could do before porting. Now once a motor is ported, not just material moved here and there by someone who thinks they know porting, but an actual two stroke specialist, you have a whole different animal.