On my wife's '71 Z/28, I have all the dash, upper and lower, in place. The lower dash, under the steering wheel is the last piece I need to install. I had trial fit it into place yesterday. The two nuts holding the steering column were not tightened at the time. Today, I tightened them. Now the lower dash will not fit. The steering column needs to go about 1/4" to the left. I loosened the nuts and pulled the column to the left to no avail. I have shims. Should I shim to the top of the right side to move the column left?