Pulled my HEI to do a little work and now I have it back on but I forgot to mark it so I had to go back through and find TDC, set the distributor in and now I can’t get it to start. I have some pretty nice 1'-2' flames coming out the headers but the backfires aren’t very loud, either way I am definitely getting fuel and spark. The engine ran fine before I pulled the distributor but now it's not even making a small sputter like it’s trying to start or anything. Anyone have an idea what could be my problem? I have heard a lot of being 180 degrees off but what exactly does that mean, if that is my problem anyway.