I have a new to me Lagunmatic 250 with an upgraded m400 Centroid CNC system. I just bought it and it didn't have a draw bar. I had a 5/8-11 threaded rod that I tried, but I am not sure if it fits or if it takes 7/16. The guy who had it before me had it in a wood shop and did some wood working with it and the drawbar hole has sawdust in it. I am not sure how much as I could be screwing the 5/8 rod into the sawdust or the tool holder end. Maybe that's why I can't unseat the tool holder, the sawdust absorbs the impact?I tried hitting the end of the threaded rod to take out the tool holder, but it wouldn't pop out. I just want to make sure it is a taper fit and not some weird auto draw bar that I can't see. Any help would be appreciated. Also if anybody has the draw bar dimensions, that would be a huge help.Thanks