yeah we did, it seems to be just right, they were slightly brown, we might go a little larger on the mains though, do to the fact that the plugs look good but there is alot of heat we can tell from the pipes turning blue, like i said try some 310's and work your way up, running a little rich is always better do to the fact of your not over heating and you have great lubrication, less chance of tearing up the top end. good luck.