Have a problem with the half shaft on a 89 olds cutlass you replaced it but when you turn right there is a thumping noise im thinking it could be motor mounts because it looks like drivers side is rub?

I was told by R-Axles in Gainsville, Florida, that replacement half shafts are being plagued with problems, because of poor foreign replacements. They look great in the box, but fail, possibly like yours. I have to say, not only did R-Axles send me back an OE shaft, but inside the box was rubber gloves, papertowels and a pocket knife as a gift for the order. And extremely nice on the phone. Give em a call. CF