nothing drastic, boyesen pro stock reeds, +4 degree key, head shaved, .020 over, cylinder is pollisded not ported, reed spacer, stock head pipe, dg silencer, was guna put the toomey on it but did the banshee first. and i only run 93 in it. just ordered new reeds to see if that was the prob, the same as whats in it now but vitos. and after i soaked that carb last week i know for a fact there is nothing left in it. its spotless.