which area does the clip snap in to to hold the injectors on the rail

i know im looking kinda nubish , but if it is the 2nd area down lower insted right by the oring , can i use a little bit of lube to get em to sit down ,

if lined them up on the manifold and tried tightening them up to get em down snug in there but there not moveing a bit ,

pictures ,

im useing a ls1 manifold on a 5.3 , what kinda bolts do i need ? any place i can buy em online ?

does any body make a cheap egr block off kits ? really just the huge plug