Center T Bar mount
Look back about 10 pages or so. SG1 had a good suggestion on the center mount. Use one of those real thin muts, the kind that use a 3/16" driver. It's almost the same thickness as the stock spacer. You can use the center screw with that and don't need a nut on top.
Just bevel the rear a T-bar about 45*. You should have all the clearance you need.
take care
john