Jvgs300

My right tip has become loose and I pulled it off because it was rattling. The left one is still on nice and snug. I see that there is a small piece of metal on the bottom of the pipe that the tip can slide on.Still not having luck cause the pipe is crooked. I've tried to put back on but it just gets loose and rattles as I drive. I'm gonna order a new one to replace. I need to know if these are originally welded on by Lexus or are they just slide ons that fit snug. Does this need to be welded or will it slide back on nice and snug? can I adjust the old tip to fit snug again or is it shot? Please help. And if anyone has a video or instruction guide please post so I can get the info.

Thanks.

Joe