Ive done some research on here ,oh im new to the 4 wheeler thing but not with engines.Any ways im a cnc machinist and have seen on here alota people are boring out there carbs to a bigger size.Ive seen people post on here that its a good top end mod,but yet have seen other people say that if you bore them out that you will run your bowls dry ,and need an inline fuel pump if this is done.I do all my engine work here at my shop in elkhart indiana.Ive got these carbs taken apart,and am deabating doing this,and am looking for a lil guidance whether i should do it ??Any comments or suggestions are greatly appreciated.The bike has wiseco bored over .020 pistons boost bottle ported and polished head shaved down .010 carbon kevlar clutch,lots of other odds and ins,but i want more power yet.But hey who doesnt.If any one else is wanting to have there carbs ported polised or ne other mods,let me know we have a full line of cnc machines lathes,and edms here,and have pics and refrences to prove.Thanks for any help teddy.