can anyone help me with this...I have a 1987 Suzuki Quadsport and i recently got a new top end and had it bored. when im driving it normally through the trails it seems to hesitate when shifting mostly from 1 to 2 or 2 to 3. it hesitates more when i shift at a higher rpm. my air filter is clean and my carb got rebuilt, so i dont know what the problem could be.

 

was the carb rejetted for the bigger bore? when i rebuilt my 230 with all the mods i put in it i had to drastically change my jetting. may need a bigger mainjet i run a 132, but i got alot of mods, try a 115 or bigger