Now what would be the point of "new carbs with bigger jets"?
Did we change something?
New cam, exhaust, filter, port job?
Only one size jet/needle position is going to give you the correct air/fuel mixture for your bike.
All the new carb-big jet combinations in the world will not make you any more horsepower unless you get more air into or out of the engine.
now...a big bore kit...that would give you more power just by increasing the displacement.
EDIT: Removed the annoying smilies in deference to age.