reproduction trailing arm fit issues

[ryangreen19]

I discovered some serious rust issues, giant holes specifically, in my trailing arms while doing my rear drums. I decided to order reproduction trailing arms, they are dynacorn. I suspect they are the only manufacturer and everyone just re-sells them. Anyway, after bolting the end at the cross member I was horrified to see that the u-bolt was not going to slide into the arm very easily. The arms seem to be about half an inch short. That being said I did measure from centre to centre on the arm and it is ~51 inches. Could it be that my axle is out of alignment instead, the passenger side shifted back a bit? I don't have the drivers side apart yet either. Wondering if things shifted with everything being up on jacks other than the rear drivers side. Has anyone had any issues installing reproduction arms? I had to grind the bushing end of the arm on one half of the arm so I could bolt it in also.