Is there a technique involved in the installation of an exhaust system? I've removed my Micron exhaust system to do some work, but once back on, I seemed to have developed a leak somewhere. Do you have to do some bolts up before others? I just positioned it in place and bolted them up as evenly as possible. I did notice that some bolts weren't very tight when I removed them so do they have to be tightened all the way or do they only have to be tight enough so the header is sitting inside the exhaust outlet? At the moment they all look like they are sitting in there nicely. I don't want to run it too much to find the leak as I don't know if this will damage anything, as well as the fact the exhaust will get hot so I can't work on it.