I did a 4th of July 5K run in the morning then came home and tacked in both floor pieces. I sometimes cease to amaze myself, both pieces fit in almost perfectly with very little grinding to make them fit. I tacked them in with a TIG welder but I will be welding them in with a MIG. I would hit little pockets of crap in the metal and the tack would get messy. Everything needs to be close to perfect when TIG welding or the weld can really get ugly.