my 2 piece welded pacesetters slipped right in i dont see the issue here? i had to cram a cross over, rear header and collector all in there at once....try every possible angle there is to get them in...patience is a godsend for shyt like this getting all angry will only prolong it haha ....try to get it in (insert beer) try again (insert beer & cig) and so on works like a charm!