i am running a bh header and pipe with a pipe stop and getting a leak out of the pipe seals to the header does has body had this problem any suggestions to fix thanks

Typically this is because of the pipe being pushed or pulled by the pipe bracket. Undo the pipe bracket, check Orings and header for damage. If all is good do a leak test without installing the pipe in the bracket. It should not leak. Then let the pipe lay down in position and move the bracket to come to the pipe and not the pipe to the bracket. Any vertical or lateral pull from the bracket will cause the Orings to leak. Hope this helps.