dipstick tube SR

[Sil-Abc]

my dipstick tube came out and i called around but no ones ever heard of this happening. but anyways, how do i put it back in? i put some rtv on the tube and slid it back in and let it sit but yea feels loose. do i weld it on or what? theres no threading or anything just a solid tube and thats it.

jon wayne appreciates ur help

edit: i just found out that u just slid it in and it "snaps" in place but mine doesnt do that sooo how does the dipstick tube stay in place? is there a lip or some sort in the block that makes it stay in place or is there a locking mechanism inside the block that holds the tube in place? cuz the tube is just a solid pipe and no deviations. sooo yeaaaaa yea?