8 3/4 Rear Axle Tube Diameter

I had no issues when i used the 8 3/4 plates on the 3 1/4 tubes. I put the u bolts on the tubes and squeezed the u bolts together by hand as I installed the plates. I had no problems at all. The holes on the plates are 3" apart, but they are bigger diameter than the u bolts, so they are not far off. Now that I post this, I did open the holes up some.