I went to help out my buddy put his new greddy type s BOV on his car, but the flange that he bought that is supposed to go into the Upper IC pipe (the pipes are stock) is too big, i can fit his plastic generic stock BOV inside the hole of the flange...did he buy the wrong piece? did anyone force it in? just curious cause mine slipped right in with a little oomph, but his i put elbow grease and it didnt even budge...ideas or thoughts plz...