Where should i mount the 550? It has strong mount and roller handle. Im figuring center or a little to the right. How far from the edge? Also the lee will be mounted directly to the desk somewhere near where it is above the missing drawer so that it doesn't block any drawers.. It'll come off the 2x6 frame thing. I bought it from a friend that way, its just sitting there for the pic. I also have a dillon swager, where should it go? I've had this stuff for a few years and just now getting around to it. I mounted the 3/4" plywood with a 5/16" nut and phillips head bolt countersunk in each corner. The top of the desk is thin sheet metal with a thin layer of formica type stuff so it was too week. I'm also gonna mount a vice on the left front corner. Thanks.