I'm rebuilding my Logan 820 lathe. I installed the saddle to the Bed but it seems that the Bed Rack does not engage with the saddle gear (see Pic). Is this normal? I double checked everything on the saddle assembly and the bed assembly, everything seems to me good or at least assembled correctly. the saddle is about .07" lower, can i just shim the rack? or is something off? any help is appreciated. thanks in advance.