26-01-16, 04:15 PM
I'd say carbs most likely too but another thing to check might be for spark. Do you leave your bike parked outside all the time? Anytime I've had those symptoms of low revs stutter and it's back to normal up the revs it's been from losing spark because of arcing through the plug caps. Water collects around plug 3 and 4 and gets under the cap which gives the electricity has an easier way to ground through the head so you lose spark at the plug. It's usually cylinder 3 and 4 that it happens on because of the way the bike sits on the side stand. You said replaced your caps with new ones so it's unlikely to be that but it's easily checked so no harm ruling it out.