Hi, I'm rebuilding a workbee C-Beam machine that I bought from a friend. The assembly instructions call for one and sometimes two spacers to be placed between the acme block and the plate that it is attached to. So, my question - are the spacers meant to locate in the recessed holes as in Dia 9.00 below? If they are, there is a problem in that the spacers are 10mm OD and will not fit in the recess. In this case the nuts then stand proud and cause a slight bow in the lead screw at either travel ends. It would make sense that the spacer should sit in the recess - yes????