found out that my turbo fins have been destroyed again (3rd time), This time, the compressor nut didn't come off and still don't know what happened, everything is clean of debris, I have since found top dead center on engine and set crank at correct degrees, but I haven't loosened and changed cam sensor setting (engine was jumping around and wouldn't even idle when turbo went out). Should I put turbo back on after its fixed and see if car runs well, or try to set cam sensor first.thanks