I have never had a problem on either Nsr with jha pipes, Nsr with jolly moto pipes or rs with jha pipes. I even got my old mc28 with jollies in the gp circuit at brands. Always worth taking some newer,well packed or longer cans just in case...it even done standard pipes if its really desperate!

On static tested just make sure you open the throttle slowly to get up to the required revs....or just a little below, I have seen people blipping the throttle at around the required rpm which always seems noisier to me.