Up jetting is an option with pods , give grumpy 1260 a bell and see if an air corrector kit is available for your model .
Alternatively try some 36 mm carbs from a gsxr , got some on mine and massive improvement, 34 mm tin tops off power screen or early gsxr 11 work well too . Have got a set of these set up for gsx 11 ,not for sale but can let you know mains and pilots if you go that route