I have a tru trac in my swinger and have had no problems with it. I talked to dr diff after seeing his post about having problems with them. The issue with them was tolerances and they would wine. I asked if I was going to have issues down the line and he said if there was a problem it would be obvious right away. I dont have many miles on it but so far so good. The second one I bought from him was the one he had made. I haven't installed it yet but it looks like a really well made part.