Had similar issues with drop spindles & porsche cookie cutters. the situation will "improve" when it has weight on it but clearance will be minimal & will still make contact with the rim during suspension travel. I had to grind the trailing arm with a "flap wheel" to achieve enough clearance.
You also need to make sure that the lower ball joint is in excellent condition, any play in the ball joint will not help matters at all.
This was after I asked if there where any issues like this (had heard there was on internet forums) prior to purchasing.
Hope that helps
Cheers
Brendan
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