I have a Moki .61 long-stroke rear exhaust that I'm preparing to break-in. The question I have is do I break it in using the un-cut header and pipe? I'm planning on using 5% and am prepared to put at least a gallon through it prior to any header adjustments. I'm familiar with pipe tuning, but only on an engine already broken-in. It was suggested to me that I use only the header during the break-in, so I really need your help/ideas here. Thanks, Mark